I found Dave from McHow through this forum and have been getting him to upgrade the plumbing in my new home. So far he has put in an internal mains water stopcock, an external tap, re-sited the washing machine and completely replaced the bathroom. When he took up the bathroom floor the joists were really rotten - he and Ricky managed the situation without any hassle and just did the work necessary. He's got a good network of people including an efficient electrician and someone who can decorate, so for now he's my one-stop shop!