What you need to remember is that when you come to sell your house, as you
probably will. the solicitor will ask you to certify that all building works
have been done according to the book. This is because of a court case where
a solicitor was held liable for NOT doing so! So now they are all covering
themselves by getting clients to carry the can. If you don't get work passed
by the BCO then you do it at your peril. So it depends on how lucky you
feel!

Peter Crosland