M
malcolmsanford
Always found some builders sand placed in pipes tended to get them excited or borrowing the 'O" rings off of traps and not telling them seemed to get them agitated, but plumbers are an excitable breed

CU install 350 pounds inc connection
inc connection to what?
You would need to be clear that any costs associated with the provision of the supply by the DNO are not included
Reply to the thread, titled "Need to quote for a new build" which is posted in Business Related on Electricians Forums.