According to Wandsworth Councils policies builders are only allowed to work the following hours where residential occupiers are likely to be affected by noise, the hours of noisy works are restricted to:-
Monday – Friday 8.00 a.m. - 6.00 p.m.
Saturday - 8.00 a.m. - 1.00 p.m.
Sunday and Bank Holidays - No noisy activities on site
Here is the link to the documents and policy on the Wandsworth Council website and is item 5.1 on page 6 of the document. http://www.wandsworth.gov.uk/downloads/ ... tion_sites