# The Meters (Certification) (Amendment) Regulations 2026

S.I. 2026/162 · made 23 February 2026

These Regulations amend the Meters (Certification) Regulations 1998 (S.I. 1998/1566) (“the 1998 Regulations”) to provide for certification of certain meters by type for the purposes of the Electricity Act 1989 (c. 29) by inserting regulation 9A into the 1998 Regulations. The meters that are certified by type are those set out in Schedule 4A, which is inserted into the 1998 Regulations by regulation 8.

Made under: Electricity Act 1989

## Introductory text

ELECTRICITY
Made 23rd February 2026
Laid before Parliament 25th February 2026
Coming into force 23rd March 2026
The Secretary of State makes these Regulations in exercise of the powers conferred by sections 31 and 60 of, and paragraph 5 of Schedule 7 to, the Electricity Act 1989.

## 1 Citation, commencement and extent

(1) These Regulations may be cited as the Meters (Certification) (Amendment) Regulations 2026.
(2) These Regulations come into force on 23rd March 2026.
(3) These Regulations extend to England and Wales and Scotland.

## 2 Amendment of the Meters (Certification) Regulations 1998

The Meters (Certification) Regulations 1998 are amended in accordance with regulations 3 to 8.

## 3 Amendment to regulation 2

In regulation 2(1), omit the definition of “certification period”.

## 4 Amendment to regulations 4 and 7

In regulations 4(7)(c) and 7(1)(a), for “the certification period”, substitute “10 years beginning on the date on which the meter is first certified for the purpose of the Act”.

## 5 Insertion of regulation 9A

After regulation 9, insert—
“Certification by type
9A A meter is certified for the purpose of the Act where—
(a) either—
(i) a certificate in respect of that meter was issued by a meter examiner or authorised examiner in accordance with regulation 7 or regulation 9; or
(ii) the meter was certified in accordance with the Act immediately before the coming into force of these Regulations; and
(b) the meter is of a type described in columns 1 to 6 of the Table in Schedule 4A.”.

## 6 Amendment to regulation 10

In regulation 10—
(a) after paragraph (4), insert—
“or
(4A) subject to any extension to the duration of certification by type under regulation 10A, after the number of years specified for that type of meter in column 7 of the Table in Schedule 4A have passed since the meter was first certified for the purpose of the Act.”;
(b) omit paragraphs (5) and (6).

## 7 Insertion of regulation 10A

After regulation 10, insert—
“Extensions to the duration of certification
10A (1) A meter examiner must extend the duration of certification of a type of meter by 5 years if the following conditions are met—
(a) the meter is of a type described in columns 1 to 6 of the Table in Schedule 4A;
(b) an authorised supplier (“the applicant”) has—
(i) applied to the meter examiner to extend the duration of certification of that type of meter; and
(ii) submitted meters of that type to a nominated laboratory for examination and testing;
(c) the meter examiner is satisfied that—
(i) the type of meter is suitable for examination and testing to determine whether the duration of its certification can be extended;
(ii) each meter submitted for examination and testing is of an approved pattern or construction;
(iii) the number of meters examined and tested by a nominated laboratory is sufficient to provide a reasonable test of all meters of that type; and
(iv) the examination and testing by a nominated laboratory shows meters of that type can reasonably be expected to operate within the permitted margins of error for a further 5 years, beginning in respect of each meter of that type on the day that the meter would otherwise cease to be certified under regulation 10(4A).
(2) If the conditions in sub-paragraphs (1)(a) to (c) are met, the meter examiner must notify the applicant in writing that the duration of certification of meters for that type has been extended by 5 years.
(3) A 5 year extension to the duration of certification under this regulation begins, in respect of each meter of that type, on the day that the meter would otherwise cease to be certified under regulation 10(4A).
(4) A type of meter may have the duration of its certification extended under this regulation more than once.”.

## 8 Omission of Schedule 4 and insertion of Schedule 4A

(1) After Schedule 4, insert Schedule 4A, which is set out in the Schedule to these Regulations.
(2) Omit Schedule 4.

## Signature

Kate Dearden
Minister for Employment Rights and Consumer Protection
Department for Business and Trade
23rd February 2026

## Certification by Type

“Schedule 4A
Certification by Type
Regulations 9A, 10 and 10A
In the following Table—
* indicates that the meter is approved for use on a 1, 2 or 3 wire supply;
@ indicates that the meter is approved for use on a 3 or 4 wire supply;
# indicates that the meter is approved for use on a 2, 3 or 4 wire supply.
Type
Phase
Wire
Number of Elements
Rates
Approval Number
Number of Years
1
2
3
4
5
6
7
ACE 1000 SMO
1
2
1
Single
946
25
ACE 1000-282
1
2
1
Single
985
20
ACE 2000-292
1
2
1
Multi
985
20
ACE 3000 Type 100/110
*
#
3
Multi
1007
10
ACE 4000 Type GT**
*
#
Multi
1026
10
ACE 5000
*
4
3
Multi
992
10
ACE 6000 Type 661
3
4
Multi
1016
10
ACE 6000 Type 665
*
#
Multi
1024
10
ACE 9000 KBD2E
1
2
2
Multi
1028
15
C114N1R1
3
4
3
Single
923
10
CBA
1
2
1
Multi
747
10
FX221
1
2
1
Single
756
10
KBC
1
2
1
Multi
863
15
H10
1
2
1
Single
806
10
HMT
1
2
1
Single
346
15
KBA
1
2
1
Multi
745
20
KBB
1
2
1
Single
816
15
KBC15
1
2
1
Multi
924
20
KBD
1
2
1
Single
956
25
KBD
1
2
1
Multi
956
25
KXB
1
2
1
Multi
861
10
MBA
3
4
3
Multi
838
10
MC3
3
4
3
Multi
925
10
MC3
*
#
3
Multi
961
10
MTA
1
2
1
Multi
774
10
MTB
1
2
1
Multi
875
10
MTN
1
2
1
Multi
804
10
Nikolas - ACE 3000
3
4
3
Multi
987
10
P5A
*
@
3
Multi
868
10
P5A
*
@
2
Multi
869
10
P6A
*
@
3
Multi
867
10
PIA
*
@
3
Multi
888
10
PIA
*
@
2
Multi
889
10
PIB / PLB
3
#
3
Multi
919
10
PIB / PLB
3
@
2
Multi
920
10
PPA-1
3
4
3
Multi
763
10
PPA-2
3
4
3
Multi
765
10
PPB
*
@
3
Multi
858
10
PXA
*
#
3
Multi
779
10
PXA
*
@
2
Multi
802
10
PXA/I
*
#
3
Multi
807
10
S2.20 or M2X
1
2
1
Single
921
10
S200.13
1
2
1
Single
454
20
S200.16
1
2
1
Single
482
45
S200.28
1
2
1
Single
572
20
S200.30
1
2
1
Single
557
20
S200.31
1
2
1
Single
683
45
S200.32
1
2
1
Single
582
25
S200.33
1
2
1
Single
583
20
S200.38
1
2
1
Single
573
40
S200.4
1
2
1
Single
436
20
S200.7
1
2
1
Single
436
30
S203.1
3
4
3
Single
519
15
S204.16
1
2
1
Single
496
15
S206.16
1
2
1
Single
492
10
S206.7
1
2
1
Single
492
10
S207.2
1
2
1
Single
514
10
S207.4
1
2
1
Single
514
10
S300.1
*
@
2
Single
587
15
S300.3
*
@
2
Single
640
15
S301.1
3
4
3
Single
563
15
S301.6
3
4
3
Single
563
20
S301.9
3
4
3
Single
641
15
S304.60
1
2
1
Single
714
10
S304.61
1
2
1
Single
714
10
S309.1
1
2
1
Multi
568
15
S309.2
1
2
1
Multi
584
35
S309.3
1
2
1
Multi
584
20
S309.5
1
2
1
Multi
721
30
S320.1
3
4
3
Single
670
15
S320.1
3
4
3
Multi
670
10
S320.4
3
4
3
Single
671
15
S320.7
3
4
3
Single
674
15
S320.7
3
4
3
Multi
674
10
S320.75
*
@
2
Multi
679
10
S321.1
3
4
3
Single
586
15
S321.6
3
4
3
Single
586
20
S321.9
3
4
3
Single
642
15
S322.12
3
4
3
Single
663
10
S322.15
3
4
3
Single
664
10
S322.6
3
4
3
Single
633
10
S322.9
3
4
3
Single
633
10
S323.1
3
4
3
Multi
607
10
S323.12
3
4
3
Multi
660
10
S323.6
3
4
3
Multi
607
10
S323.9
3
4
3
Multi
665
10
S325.3
*
@
2
Single
643
15
S326.1
*
@
2
Single
634
10
S326.6
*
@
2
Single
665
10
S326.9
*
@
2
Single
669
10
S327.3
*
@
2
Multi
661
10
S327.6
*
@
2
Multi
662
10
S330.1
3
4
3
Multi
691
10
SBB
1
2
1
Single
823
10
SM1
1
2
1
Multi
935
20
SPA01
1
2
1
Single
728
15
SPA02
1
2
1
Multi
728
10
SPA03
1
2
1
Multi
731
10
SPA11
1
2
1
Single
728
10
SPA13
1
2
1
Multi
731
10
SPB
1
2
1
Single
855
15
SPB15
1
2
1
Single
894
15
SPC
1
2
1
Multi
865
10
SPX
1
2
1
Single
821
10
ST-Q220
3
3
3
Multi
775
10
ST-Q230
3
@
3
Multi
792
10
T2C114N1R1
3
4
3
Multi
922
10
TRA
1
2
2
Multi
768
10
TRX
1
2
2
Multi
825
10
5028A
1
2
1
Single
789
15
5054C
1
2
2
Multi
814
15
5056
1
2
1
Multi
817
10
5028L
1
2
1
Multi
820
10
5054
1
2
2
Multi
824
10
5071
1
2
1
Multi
853
10
5077
1
2
1
Multi
860
25
5057
*
@
3
Multi
866
10
5162
1
2
1
Multi
893
15
5165
*
@
3
Multi
896
10
5178A
1
2
1
Single
897
20
5188
1
2
1
Multi
908
15
5193
1
2
1
Multi
915
25
5194
1
2
1
Multi
916
15
5192
*
@
3
Multi
926
15
5184
1
2
1
Multi
927
20
5196
1
2
1
Multi
933
25
5207
1
2
1
Single
941
20
5209
1
2
1
Multi
944-1
25
5226
1
2
2
Multi
958
10
5232A
1
2
1
Single
973
20
5219
*
#
1
Single
981
20
5224E
1
2
1
Multi
982
20
5235
1
2
1
Single
986
20
5235***
1
2
1
Single
986
20
5164
1
2
1
Single
990
10
5246C-*
1
2
1
Multi
1003
20
5258*-*
1
2
1
Single
1006
20
5254E & 5254F
1
2
1
Multi
1013
20
EM1200
1
2
2
Multi
1027
10
IC 200-IM-R
3
4
3
Single
1030
10
CE
3
4
3
Single
790
10
CE
3
3
2
Single
791
10
CE
3
4
3
Single
795
10
CE
3
3
2
Single
796
10
2***, 3***, 4***
3
4
3
Single
839-842
10
Prometer-R
3
@
2 & 3
Single
983
10
Prometer-W
3
@
3
Single
999
10
Prometer 100 P3E
3
@
3
Single
1034
10
Prometer 100 R3E
3
@
3
Single
1035
10
PQM, ProQ 100
3
@
3
Single
1036
10
K
1
2
1
Single
338
15
PT4
3
4
3
Single
462
20
TM3c
1
2
1
Single
481
20
B1V7
1
2
1
Multi
864
10
EM-1021 83861-1*****
1
2
1
Multi
1011
15
EM-1023 83321-3*****
*
#
1,2 or 3
Multi
1012
10
Mk10A 1A ** - **** - ** - *** - ****** - **
3
4
3
Multi
1033
10
Mk 10E 1E **_*****_***_**_***_******_**
3
4
3
Multi
1032
10
Atlas Mk 10 - 2
3
4
3
Multi
977
10
Atlas Mk 10 - 2(CT)
3
4
3
Multi
977
10
Atlas Mk 10 - 1
3
4
3
Multi
979
10
Atlas Mk 10 - 1(CT)
3
4
3
Multi
980
10
Atlas Mk10-4-2000-10*3-1A1-15-A-****-******
*
#
3
Multi
977
10
Atlas Mk 10-*-2000-1010-1A1-15-AD2*0-***
*
#
3
Multi
977
10
Atlas Mk10-4-2000-10*3-1C2-15-A****_******
*
#
3
Multi
978
10
Atlas Mk 10-*-2000-1010-1C2-15-AD2*0-***
*
#
3
Multi
978
10
Mk 6E 2000-6E**-*****-***-***-***
3
@
Multi
1031
10
EM101-4
1
2
1
Multi
1015
15
EM341-4
3
4
3
Multi
1019
15
A 1700 PB2 & PB3
*
#
Multi
907
10
A 1700 PB2 & PB3
*
#
Multi
911
10
A 1700 PB2 & PB3
*
#
Multi
912
10
A 1700 PB2 & PB3
*
#
Multi
913
10
A 1700 PB2 & PB3
*
#
Multi
914
10
B31B
1
2
1
Single
358
7
D42B
*
@
2
Single
494
15
D42B/M
*
@
2
Single
494
15
D43B
3
4
3
Single
495
15
D43B/M
3
4
3
Single
495
15
D43B-R
3
4
3
Multi
495
10
D43B-R/M
3
4
3
Multi
495
10
D42F
*
@
2
Single
497
15
D42F/M
*
@
2
Single
497
15
C31B-R
1
2
1
Multi
503
15
C31B-R/M
1
2
1
Multi
503
15
D42B-R
*
@
2
Multi
507
10
D42B-R/M
*
@
2
Multi
507
10
D42F-R
*
@
2
Multi
507
10
D42F-R/M
*
@
2
Multi
507
10
C31B
1
2
1
Single
509
15
C31B/M
1
2
1
Single
509
35
D42B-D
*
@
2
Single
510
10
D42B-D/M
*
@
2
Single
510
10
D42B-DR
*
@
2
Multi
510
10
D42B-DR/M
*
@
2
Multi
510
10
D42F-D
*
@
2
Single
510
10
D42F-D/M
*
@
2
Single
510
10
D42F-DR
*
@
2
Multi
510
10
D42F-DR/M
*
@
2
Multi
510
10
E42B3
*
@
2
Single
510
15
E42B3-D
*
@
2
Single
510
10
E42B3-DR
*
@
2
Multi
510
10
E42B3-R
*
@
2
Multi
510
10
E42B4
*
@
2
Single
510
15
E42B4-D
*
@
2
Single
510
10
E42B4-DR
*
@
2
Multi
510
10
E42B4-R
*
@
2
Multi
510
10
E42F3
*
@
2
Single
510
15
E42F3-D
*
@
2
Single
510
10
E42F3-DR
*
@
2
Multi
510
10
E42F3-R
*
@
2
Multi
510
10
E42F4
*
@
2
Single
510
15
E42F4-D
*
@
2
Single
510
10
E42F4-DR
*
@
2
Multi
510
10
E42F4-R
*
@
2
Multi
510
10
C31B-D
1
2
1
Single
524
10
C31B-D/M
1
2
1
Single
524
10
D43F
3
4
3
Single
548
15
D43F/M
3
4
3
Single
548
15
D42BC
*
@
2
Single
570
15
D42BC/M
*
@
2
Single
570
15
D42BC-D
*
@
2
Single
570
10
D42BC-D/M
*
@
2
Single
570
10
C21B
1
2
1
Single
577
20
C21B/M
1
2
1
Single
577
20
C31B-DR
1
2
1
Multi
580
10
C31B-DR/M
1
2
1
Multi
580
10
C21B-R
1
2
1
Multi
585
10
C21B-R/M
1
2
1
Multi
585
15
E42B
*
@
2
Single
590
15
E42B/M
*
@
2
Single
590
15
E43B
3
4
3
Single
591
15
E43B/M
3
4
3
Single
591
20
E43B3-R
3
4
3
Multi
591
15
E43B4-R
3
4
3
Multi
591
15
E43F3-R
3
4
3
Multi
591
10
E42B-D
*
@
2
Single
592
10
E42B-D/M
*
@
2
Single
592
10
E42B-DR
*
@
2
Multi
594
10
E42B-DR/M
*
@
2
Multi
594
10
E42B-R
*
@
2
Multi
594
10
E42B-R/M
*
@
2
Multi
594
10
E43B-D
3
4
3
Single
595
10
E43B-D/M
3
4
3
Single
595
15
E43B-DR
3
4
3
Multi
595
10
E43B-DR/M
3
4
3
Multi
595
10
E43B-R
3
4
3
Multi
595
10
E43B-R/M
3
4
3
Multi
595
10
E42BC
*
@
2
Single
597
15
E42BC/M
*
@
2
Single
597
10
E42BC-D
*
@
2
Single
600
10
E42BC-D/M
*
@
2
Single
600
10
E42F
*
@
2
Single
602
15
C11B
1
2
1
Single
603
20
C11B-R
1
2
1
Multi
613
10
C11B-R/M
1
2
1
Multi
613
20
C11B-D
1
2
1
Single
615
10
C11B-D/M
1
2
1
Single
615
10
C11B-DR
1
2
1
Multi
615
10
C11B-DR/M
1
2
1
Multi
615
10
E43C-2D
3
4
3
Single
617
10
E43C-2D/M
3
4
3
Single
617
10
E43C-2DR
3
4
3
Multi
618
10
E43C-2DR/M
3
4
3
Multi
618
10
E42C-2D
*
@
2
Single
619
10
E42C-2D/M
*
@
2
Single
619
10
E42C-2DR
*
@
2
Multi
620
10
E42C-2DR/M
*
@
2
Multi
620
10
E43F
3
4
3
Single
621
15
E42F-D
*
@
2
Single
622
10
E42F-D/M
*
@
2
Single
622
10
E42F-DR
*
@
2
Multi
623
10
E42F-DR/M
*
@
2
Multi
623
10
E42F-R
*
@
2
Multi
623
10
E42F-R/M
*
@
2
Multi
623
10
E43F-D
3
4
3
Single
623
10
E43F-DR
3
4
3
Multi
623
10
E43F-R
3
4
3
Multi
623
10
C11B/M
1
2
1
Single
627
30
C11B2
1
2
1
Single
628
35
C11B2A
1
2
1
Single
628
35
C11B2A-R
1
2
1
Multi
628
25
C11B2-R
1
2
1
Multi
628
25
C11B2C
1
2
1
Single
632
10
C11B2C-R
1
2
1
Multi
632
10
C11B2-D
1
2
1
Single
637
10
C11B2-DR
1
2
1
Multi
637
10
E43B2
3
4
3
Single
644
15
E42B2
*
@
2
Single
645
15
E43B2-D
3
4
3
Single
646
10
E43B2-DR
3
4
3
Multi
646
10
E43B2-R
3
4
3
Multi
646
10
E42B2-R
*
@
2
Multi
647
10
E42B2-D
*
@
2
Single
649
10
E42B2-DR
*
@
2
Multi
651
10
E43B3
3
4
3
Single
749
20
E43B3-D
3
4
3
Single
749
15
E43B3-DR
3
4
3
Multi
749
15
E43B4
3
4
3
Single
749
20
E43B4-D
3
4
3
Single
749
15
E43B4-DR
3
4
3
Multi
749
15
E43F3
3
4
3
Single
749
15
E43F3-D
3
4
3
Single
749
10
E43F3-DR
3
4
3
Multi
749
10
E43F4
3
4
3
Single
749
15
E43F4-D
3
4
3
Single
749
10
E43F4-DR
3
4
3
Multi
749
10
E43F4-R
3
4
3
Multi
749
10
CM1
1
2
1
Multi
764
20
LSA01-001
3
4
3
Single
771
10
LSA02-002
3
4
3
Single
772
10
HA1
1
2
1
Multi
773
10
HA1
1
2
1
Single
773
10
CM2
1
2
1
Multi
783
15
PM2
3
3
2
Multi
784
10
LSA02-001
3
4
3
Single
786
10
CM4
1
2
1
Multi
793
10
CM5
1
2
1
Multi
794
5
PM1
1
2
1
Multi
800
10
PM3 (CT operated)
*
#
3
Multi
801
15
TM1
1
2
1
Multi
809
10
TM2
1
2
1
Multi
810
10
CM6
1
2
1
Multi
812
10
CM7
1
2
1
Multi
813
15
PM2***JK
3
3
832
10
PM3***JK
*
#
833
15
SC2B
1
2
1
Multi
843
10
T81
3
4
3
Single
845
10
M81
1
2
1
Single
846
10
C11B3
1
2
1
Single
847
15
C11B3-R
1
2
1
Multi
847
10
C11B3C
1
2
1
Multi
848
10
EP2
3
3
2
Multi
849
10
EP2J
3
3
2
Multi
850
10
EP3
*
#
3
Multi
851
10
EP3J
*
#
3
Multi
852
15
PM3 (CT operated)
*
#
877
15
PM2 (CT operated)
3
3
878
10
PM3
*
#
879
15
PM2
3
3
880
10
J11B
1
2
1
Single
892
20
PB3
*
@
3
Multi
907
10
J11D
1
2
1
Single
910
20
PB3
*
#
3
Multi
911
10
PB2
3
3
2
Multi
912
10
PB2
3
3
2
Multi
913
10
A120 & A140 (SB1 & SD1)
1
2
1
Multi
939
20
EI3S
3
4
3
Single
952
10
A101
1
2
1
Multi
954
20
E111
1
2
1
Single
966
10
E211
1
2
1
Single
969
10
A1100
3
@
2
Multi
971
15
A100C
1
2
1
Multi
984
20
A200
1
2
1
Single
991
10
A1120 & A1140 & A1160
*
#
3
Multi
998
10
EMP1.c*
3
4
3
Single
1037
10
LZQJ-XC
3
4
3
Single
1038
10
GE24
1
2
1
Single
760
10
GH42
3
4
3
Single
761
10
S12
1
2
1
Single
945
10
DTSD545 CT
3
4
3
Single
1046
10
NU 070
1
2
1
Multi
803
10
NU 070 2
1
2
2
Multi
803
10
NU 076
1
2
1
Multi
836
15
NU 076-2
1
2
2
Multi
837
15
NU077-1
1
2
1
Multi
873
20
NU077-2
1
2
2
Multi
874
15
NU098
3
4
3
Multi
898
10
L100A00 & variants
1
2
1
Multi
948
15
J2, K2 and variants
1
2
2
Multi
959
20
K1
1
2
1
Multi
959
20
M1*****
1
2
1
Multi
967
15
S1*****
1
2
1
Multi
1001
20
Series S
1
2
Multi
1001
20
A115A** and A222A**
1
2
1 & 2
Single
1004
10
MAINSCOM
1
2
Single
1004
10
Mainstar
1
2
1
Single
997
10
E89AT2
1
2
1
Multi
766
15
E89E2
1
2
1
Single
766
25
E89ATD2
1
2
1
Multi
767
10
E89ED2
1
2
1
Multi
767
10
T31AT2
3
4
3
Single
769
10
T31ATD2
3
4
3
Multi
770
10
T37E2
3
4
3
Single
780
10
T37ED2
3
4
3
Multi
780
10
E96E2
1
2
1
Single
808
15
TE33
3
3
2
Multi
881
10
TE44
*
@
3
Multi
882
10
ME 100, 150 & 200
1
2
1
Multi
930
20
ME 22 P
1
2
1
Multi
931
10
MT3
3
4
3
Multi
932
10
MT3**
*
#
3
Multi
938
15
T36 1C2
3
4
3
Single
942
10
ME160
1
2
1
Single
949
20
MT401
3
4
3
Multi
962
10
ME161
1
2
1
Multi
970
10
MT420
3
4
3
Multi
976
10
MT423
3
4
3
Multi
976
10
MT171
*
4
3
Multi
989
10
ME162
1
2
1
Multi
1000
20
ME351
1
2
1
Single
1002
10
MT351
3
4
3
Single
1005
10
ME22P
1
2
1
Single
1008
10
MT37*-**A*****
3
4
3
Single
1010
10
MT372 &MT375
3
4
3
Single
1010
10
ME371 & ME 372
1
2
1
Single
1020
10
B1**
3
4
3
1018
10
C2**
1
2
1
1014
10
EE 3000 M
1
2
1
Single
859
10
685-351-**-00-050
3
4
3
Multi
964
10
686-162
1
2
1
Single
974
10
685-38*-OK-50
3
4
3
Multi
975
10
Z*Q20*C.*r***f *
3
@
3
Multi
1021
10
Z*D4**CT**.****S*
3
@
3
Multi
1023
10
E570
3
@
3
Single
1039
10
E660
3
@
3
Single
1040
10
MCS301
3
4
3
Single
1043
10
NF5
1
2
1
Single
409
15
NQ
1
2
1
Single
493
15
NQ/M
1
2
1
Single
530
20
NMM - ES
1
2
1
Multi
895
10
AK-2000
3
4
3
Multi
928
10
ES-2000P
1
2
1
Multi
934
10
AK-2000P
3
4
3
Multi
936
10
AK2000C
3
4
3
Multi
950
10
73**
3
4
3
Multi
965
10
ION P7550***0*5***.
3
4
Single
1009
10
ION P7650***0*5****
3
4
Single
1009
10
ION *8800***0B5*****
3
@
1029
10
ION *7550***0*5*****
3
4
1025
10
ION *7650***0*5*****
3
4
1025
10
CALMU C3D
3
4
3
Multi
750
5
CALMU C3T
*
#
3
Multi
751
10
CALMU C3TV
3
3
2
Multi
752
10
C3TV
3
3
2
Multi
777
10
C3V+
3
3
2
Multi
818
10
C3T+
*
#
3
Multi
819
10
CALMU3 C3T+
*
#
3
Multi
834
10
CALMU3 C3V+
3
3
2
Multi
835
10
C3D+
*
#
3
Multi
854
15
S3DXP410
*
#
3
Multi
886
10
P3M
*
#
3
Multi
891
10
P3T***
*
#
3
Multi
890
10
S3D410
*
#
3
Multi
900
10
P3VA11
3
3
2
Multi
901
10
P3V
3
3
2
Multi
902
10
R3V025-100
3
3
2
Multi
903
10
R3V021-100
3
3
2
Multi
904
10
R3M025-100
3
4
3
Multi
905
10
R3M021-100
3
4
3
Multi
906
10
LIBERTY 3E E1D104-100 E1D204-100
1
2
3
Multi
960
10
LIBERTY 3E E1D*04-*00/M
1
2
3
Multi
960 AMD1
15
LIBERTY 3P E3PD**_***
*
#
3
Multi
993
15
LIBERTY 3P E3PD**_***/M
*
#
3
Multi
993
15
E1D
1
2
1
Multi
918
15
LIBERTY 1E E1D*04-***
1
2
Multi
918 AMD1
15
LIBERTY 1E E1D***-***/M
1
2
1
Multi
918 AMD3
20
E1C***-*11i
1
2
1
Multi
996
15
Sprint XP
*
#
Single
1017
15
Premier P3**********N*M
*
#
Multi
1022
10
Premier P3**********N5M
*
#
1
1022
10
DDS43
1
2
1
Multi
994
20
DTS43
3
4
3
Multi
995
10
Premier 550 Type S3E551 and Type S3T551
3
@
3
Single
1041
10
Premier 550 Type S3E521
3
@
3
Single
1042
10
Prometer 540 type P54001
3
@
3
Single
1044
10
Prometer 540 type P54002
3
@
3
Single
1045
10
FD 95
1
2
1
Single
940
10
FM
1
2
1
Single
323
15
FMm
1
2
1
Single
342
5
FMP
1
2
1
Single
350
10
FMP2
1
2
1
Multi
406
10
FMmY
*
@
2
Single
414
15
FMmYT
*
@
2
Single
414
15
FMY
*
@
2
Single
414
15
FMmX
3
4
3
Single
415
15
FMmXT
3
4
3
Single
415
15
FMX
3
4
3
Single
415
20
MF3
3
4
3
Single
425
15
MF3d
3
4
3
Multi
425
15
FMXMD
3
4
3
Single
434
10
FMMD
1
2
1
Single
443
10
FMmMD
1
2
1
Single
443
10
FMT
1
2
1
Multi
455
10
FMXT
3
4
3
Multi
457
10
CL7
1
2
1
Single
463
35
CL7d
1
2
1
Multi
463
15
CH1
1
2
1
Single
466
15
MH1
3
4
3
Single
479
10
MH1dm
3
4
3
Multi
479
10
FMXa
3
4
3
Single
488
15
CL17
1
2
1
Single
508
20
CL17d
1
2
1
Multi
508
10
DF34
*
@
2
Single
515
15
DF34dm
*
@
2
Multi
515
10
FF34
*
@
2
Single
515
15
HF34
*
@
2
Single
515
10
HF34dm
*
@
2
Single
515
10
MF34
3
4
3
Single
515
15
MF34dm
3
4
3
Multi
516
10
FMXaT
3
4
3
Multi
518
10
YL1
3
4
3
Single
525
15
YL1d
3
4
3
Multi
525
10
FN12
1
2
1
Single
527
20
FNE12
1
2
1
Single
527
20
FN12Q
1
2
1
Single
528
25
FNE12Q
1
2
1
Single
528
25
YL11
3
4
3
Single
531
20
YL11d
3
4
3
Multi
532
15
YL11dm
3
4
3
Multi
532
10
CL27
1
2
1
Single
533
35
CL27d
1
2
1
Multi
533
25
FN12P
1
2
1
Single
535
10
FNE12P
1
2
1
Single
535
10
FN12PF
1
2
1
Single
536
10
FNE12PF
1
2
1
Single
536
10
FN34
3
4
3
Single
538
15
FN34QR2
3
4
3
Multi
538
10
FNE34
3
4
3
Single
538
15
FN33
*
@
2
Single
540
15
FN33Q
*
@
2
Single
540
15
FNE33
*
@
2
Single
540
15
FNE33Q
*
@
2
Single
540
15
FN12QP
1
2
1
Single
541
10
FNE12QP
1
2
1
Single
541
10
FN12QPF
1
2
1
Single
542
10
FNE12QPF
1
2
1
Single
542
10
FNA34R2
3
4
3
Multi
543
10
FNEA33
*
@
2
Single
543
15
FNEA33Q
*
@
2
Single
543
15
FNEA34
3
4
3
Single
543
15
FN34Q
3
4
3
Single
545
15
FNA34
3
4
3
Single
545
15
FNA34Q
3
4
3
Single
545
20
FNE34Q
3
4
3
Single
545
15
FNEA34Q
3
4
3
Single
545
15
CL28
1
2
1
Single
546
20
CL28d
1
2
1
Multi
546
10
FMQ
1
2
1
Single
549
20
FN12R2
1
2
1
Multi
549
10
FNE12QR2
1
2
1
Multi
550
10
FNE12R2
1
2
1
Multi
550
10
FN34R2
3
4
3
Multi
551
10
FNA34QR2
3
4
3
Multi
551
10
FNE34QR2
3
4
3
Multi
551
10
FNE34R2
3
4
3
Multi
551
10
FNEA34QR2
3
4
3
Multi
551
10
FNEA34R2
3
4
3
Multi
551
10
FN33QR2
*
@
2
Multi
552
10
FN33R2
*
@
2
Multi
552
10
FNE33QR2
*
@
2
Multi
552
10
FNE33R2
*
@
2
Multi
552
10
FN12D
1
2
1
Single
553
10
FNE12D
1
2
1
Single
553
10
FN34D
3
4
3
Single
554
10
FN34QD
3
4
3
Single
554
10
FNE33D
*
@
2
Single
554
10
FNE33QD
*
@
2
Single
554
10
FNE34D
3
4
3
Single
554
10
FNE34QD
3
4
3
Single
554
10
FNA33D
*
@
2
Single
560
10
FNA34D
3
4
3
Single
560
10
FNEA33D
*
@
2
Single
560
10
FNEA33QD
*
@
2
Single
560
10
FNEA34D
3
4
3
Single
560
10
FNEA34QD
3
4
3
Single
560
10
FNN2
1
2
1
Single
574
20
FNN2Q
1
2
1
Single
574
35
CL27.1
1
2
1
Single
575
25
CL27.1d
1
2
1
Multi
575
10
FN12QD
1
2
1
Single
579
10
FNE12QD
1
2
1
Single
579
10
VL11
*
@
2
Single
588
15
VL11.5
*
@
2
Single
588
15
VL11.5d
*
@
2
Multi
588
10
VL11d
*
@
2
Multi
588
10
FNA33
*
@
2
Single
589
15
FNA33Q
*
@
2
Single
589
15
FNA33QR2
*
@
2
Multi
589
10
FNA33R2
*
@
2
Multi
589
10
FNEA33QR2
*
@
2
Multi
589
10
FNEA33R2
*
@
2
Multi
589
10
FNA34QD
3
4
3
Single
606
10
CL27.2
1
2
1
Single
614
35
CL27.2d
1
2
1
Multi
614
25
FNN2QD
1
2
1
Single
626
10
F2Q-100
1
2
1
Single
630
30
F2Q-11B
1
2
1
Single
638
20
FPQ-102
1
2
1
Single
639
10
FNAB34
3
4
3
Single
652
15
FNAB34Q
3
4
3
Single
652
20
FNAB34QR2
3
4
3
Multi
652
15
FNAB34R2
3
4
3
Multi
653
10
VL122
*
@
2
Single
654
15
VL122d
*
@
2
Multi
654
10
VL123
*
@
2
Single
654
15
VL123d
*
@
2
Multi
654
10
VL124
*
@
2
Single
654
15
VL124d
*
@
2
Multi
654
10
VL125
*
@
2
Single
654
15
VL125dm
*
@
2
Multi
654
10
YL120
3
4
3
Single
654
15
YL120dm
3
4
3
Multi
654
10
YL121
3
4
3
Single
654
15
YL121d
3
4
3
Multi
654
15
FNAB33
*
@
2
Single
656
15
FNAB33Q
*
@
2
Single
656
15
FNAB33QR2
*
@
2
Multi
657
10
FNAB33R2
*
@
2
Multi
657
10
FNAB33D
*
@
2
Single
659
10
FNAB34D
3
4
3
Single
659
10
FNAB34QD
3
4
3
Single
659
10
FN33D
*
@
2
Single
666
10
FN34DR2
3
4
3
Multi
666
10
FMXMDR2
3
4
3
Multi
667
10
FMYMDR2
*
@
2
Multi
667
10
F2Q-10W
1
2
1
Multi
668
10
F2Q-10D
1
2
1
Single
672
10
F2Q-11D
1
2
1
Single
673
10
CL127
1
2
1
Single
675
20
CL127d
1
2
1
Multi
675
10
F2K-100
1
2
1
Single
677
25
F2K-100-2
1
2
1
Multi
681
25
F2K-100L
1
2
1
Single
685
20
F2K-100L-2
1
2
1
Multi
685
15
CL147
1
2
1
Single
686
40
CL147d
1
2
1
Multi
687
30
F2K-100I
1
2
1
Single
688
20
F2K-100I-2
1
2
1
Multi
688
15
FNN2QC
1
2
1
Single
689
20
F4K-100
3
4
3
Single
695
15
F4K-11B
3
4
3
Single
696
15
F2K-50B
1
2
1
Single
702
10
F2K-11B
1
2
1
Single
703
20
F4K-100-2
3
4
3
Multi
704
10
F4K-11B-2
3
4
3
Multi
704
10
F3K-100
*
@
2
Single
705
15
F3K-100-2
*
@
2
Multi
705
10
F3K-100L
*
@
2
Single
705
15
F2K-500
1
2
1
Single
710
10
F4K-10B
3
4
3
Single
712
15
F4K-10B-2
3
4
3
Multi
712
10
F2K-11B-2
1
2
1
Multi
713
10
F2K-500C
1
2
1
Single
717
10
F2K-500C-2
1
2
1
Multi
717
10
F2K-500C-9
1
2
1
Multi
717
10
F3K-100L-2
*
@
2
Multi
729
10
F4K-100L
3
4
3
Single
729
15
F4K-100L-2
3
4
3
Multi
729
10
F4K-10BL
3
4
3
Single
729
15
F4K-10BL-2
3
4
3
Multi
729
10
F4K-11BL
3
4
3
Single
729
15
F4K-11BL-2
3
4
3
Multi
729
10
F3K-100I
*
@
2
Single
730
15
F3K-100I-2
*
@
2
Multi
730
10
F4K-100I
3
4
3
Single
730
15
F4K-100I-2
3
4
3
Multi
730
10
F4K-10BI
3
4
3
Single
730
15
F4K-10BI-2
3
4
3
Multi
730
10
F4K-11BI
3
4
3
Single
730
15
F4K-11BI-2
3
4
3
Multi
730
10
F3K-11B
*
@
2
Single
733
15
F3K-11B-2
*
@
2
Multi
733
10
F3K-11BL
*
@
2
Single
733
15
F3K-11BL-2
*
@
2
Multi
733
15
F3K-10B
*
@
2
Single
734
15
F3K-10B-2
*
@
2
Multi
734
10
CM147
1
2
1
Single
735
20
CM147d
1
2
1
Multi
735
10
F2K-500D
1
2
1
Multi
736
10
F2K-500D-2
1
2
1
Multi
743
10
F2K-500D-9
1
2
1
Multi
743
10
S2S-500A1
1
2
1
Single
754
10
S2S-500A2
1
2
1
Multi
754
10
ZCB120
1
2
1
Single
757
20
ZCB120d
1
2
1
Multi
757
15
S2S-700A
1
2
1
Multi
758
20
S2S-600A
1
2
1
Multi
762
15
ZCB127
1
2
1
Multi
781
15
ZCB127
1
2
2
Multi
782
15
S4S-11B
3
4
3
Multi
787
10
ZMB127
*
#
3
Single
788
15
ZMB127d
*
#
3
Multi
788
15
ZFA405
3
3
2
Single
797
10
ZMA405
3
3
4
Single
798
10
ZCA405
1
2
1
Single
799
10
S4S 100
3
4
3
Multi
805
10
FF10
3
3
2
Single
811
10
MF10
3
4
3
Single
811
10
VL11101
3
3
2
Single
811
10
YL11101
3
4
3
Single
811
10
S2S-601A
1
2
1
Multi
827
15
ML240xtf3
3
4
3
Multi
831
10
S2S-720A
1
3
1
Multi
856
10
S2S-730A
1
2
2
Multi
857
10
S2A-100
1
2
1
Multi
862
10
S2A-200
1
2
1
Multi
870
20
F2K-100H-9
1
2
1
Single
871
20
ZMB120K
3
4
3
Multi
872
10
7EC49
3
4
3
Multi
883
10
ZCB221k
1
2
1
Multi
884
10
Q4N
*
@
3
Multi
885
10
S2AS
1
2
1
Multi
887
25
ZMB120k
3
4
3
Multi
899
10
S2BS
1
2
1
Single
909
25
S2BS
1
2
1
Multi
917
20
S2AT
1
2
1
Multi
929
20
ZMD120AM
*
#
3
Multi
937
10
S2AM-100
1
2
1
Multi
944-2
25
ZCE127
1
2
1
Multi
951
15
ZMD120AS
*
#
3
Multi
953
10
ZCE129ACe
1
2
1
Single
955
25
ZCE129ACd
1
2
1
Multi
955
25
CM100
1
2
1
Single
968
10
MM2000
3
4
3
Multi
972
10
ZCE 527
1
2
1
Multi
988
20
AM
1
2
1
Single
348
20
ZAP01
1
2
1
Multi
943
10
”.

## Explanatory note

(This note is not part of the Regulations)
These Regulations amend the Meters (Certification) Regulations 1998 (S.I. 1998/1566) (“the 1998 Regulations”) to provide for certification of certain meters by type for the purposes of the Electricity Act 1989 (c. 29) by inserting regulation 9A into the 1998 Regulations. The meters that are certified by type are those set out in Schedule 4A, which is inserted into the 1998 Regulations by regulation 8.
Regulation 6 amends regulation 10 of the 1998 Regulations to provide when certification is terminated for meters certified by type.
Regulation 7 inserts regulation 10A into the 1998 Regulations to provide a mechanism for meter examiners to extend the duration of certification of a type of meter by 5 years, if the type of meter is listed in Schedule 4A. Following an application by an authorised supplier, the duration of certification of a type of meter must be extended by a meter examiner if the conditions in sub-paragraphs (a) to (c) of regulation 10A are met. This occurs if the meter examiner is satisfied that the examination and testing of samples by a nominated laboratory shows, to the meter examiner’s satisfaction, that meters of that type can reasonably be expected to operate accurately for a further 5 years. Regulation 10A(4) provides that a type of meter may have the duration of certification extended more than once, provided the conditions in regulation 10A is are met each time.
A full impact assessment has not been produced for this instrument as no, or no significant, impact on the private, voluntary or business sectors is foreseen. An Explanatory Memorandum is published alongside these Regulations on www.legislation.gov.uk.

---
Source: https://www.legislation.gov.uk/uksi/2026/162 (the official version)
Page: https://openlegislation.uk/meters-certification-amendment-regulations-2026
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.