Section 81(1) (general definitions) is amended as follows.

For the definition of “apparatus” substitute—

In paragraph (a) of the definition of “communication” omit “(except in the definition of “postal service” in section 2(1))”.

In the definition of “interception” and cognate expressions, for “section 2” substitute “ sections 4 and 5 of the Investigatory Powers Act 2016 ”.

For the definitions of “postal service” and “public postal service” substitute—

Omit the definitions of “private telecommunication system”, “public telecommunications service” and “public telecommunication system”.

In the definitions of “telecommunication system” and “telecommunications service”, for “the meanings given by section 2(1)” substitute “ the same meanings as in the Investigatory Powers Act 2016 (see section 261(11) to (13) of that Act) ”.