Rule 4.12 Proof of serviceI1 England and Wales Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: rule 48.5(1)(b(ii) word inserted by Criminal Procedure 2026 rule 18(a)(i)(bb) rule 48.5(1)(b(i) word omitted by Criminal Procedure 2026 rule 18(a)(i)(aa) The person who serves a document may prove that by signing a certificate explaining how and when it was served. Annotations Commencement I1 Rule 4.12 in force at 6.10.2025, see Preamble ← Rule 4.11 Rule 4.12 Rule 4.13 →