Has anyone used (or heard of) The National Conservatory Advisory Service??
I came across their details in the local Thomson Directory. They claim to visit your home, give advice on what's needed (and what's not) and then put tenders out to reliable companies on your behalf. The companies they use for tenders do not have your details unless you go ahead with the job. NCAS make their money from the registered companies used paying them a fee. It sounds too good to be true!!