Bespoke furniture companies data search online and entry in required format, UK based

Bespoke furniture companies data search online and entry in required format, must be UK based, ideally London, as Search engines are providing results based on the IP addresses.

Full details of 1000 UK based companies required, to be entered in an online form.
I do want to capture the 1000 Englands best known bespoke/fitted furniture suppliers, who are offering design service, are having showrooms and are installing the furniture.
Approx they could be spread in a following way:
35% Greater London (could be up to 50% from total)
10% in West Midlands, Greater Manchester and West Yorkshire
5% in Kent, Essex, Mersey Side, South Yorkshire, Hampshire, Lancashire, Surrey, Hetfordshire and Tyne&Wear

Full details and comments on request.

Thanks