What is it with the bureaucrats in local councils which makes them think they can ignore the law and impose their own arbitrary rules?

From http://www.tameside.gov.uk/corpgen/new/bldnoticenote.html
Quote
All wiring and electrical works must be designed, installed, inspected and tested in accordance with the requirements of BS 7671, the IEE 16 th edition wiring guidance.

Failure to comply with these regulations is an offence, and the Council can pursue a prosecution for a fine against any person contravening them

Haven't they yet accepted that Part P does not stipulate compliance with BS7671 as being a legal requirement?