Paragraph 28
Subject to paragraph (2), every bath, wash basin, sink or similar appliance shall be provided with a watertight and readily accessible plug or other device capable of closing the waste outlet.
This requirement does not apply to–
an appliance where the only taps provided are spray taps;
a washing trough or wash basin whose waste outlet is incapable of accepting a plug and to which water is delivered at a rate not exceeding 0.06 litres per second exclusively from a fitting designed or adapted for that purpose;
a wash basin or washing trough fitted with self-closing taps;
a shower bath or shower tray;
a drinking water fountain or similar facility; or
an appliance which is used in medical, dental or veterinary premises and is designed or adapted for use with an unplugged outlet.