Paul,
A reasonable guide guide is the Crabtree technical guideline 1 for typical domestic installatins it has the recomendations as laid down by EILC (Electrical Industry Liasion Commitee. My copy is out of date (dont do to mutch domestic work nower days. Its a specifiers guide used by local Authorities and Architects. Give your local Crabtree rep a shout he might have an upto date copy, This one is dated 1993 and the minimum recomendation then was 4 twin sockets in a double bedroom, 3 in a single bedroom.
Things have moved on a pace since then, Tv's, Computers etc, kids bedrooms especially seem to become the nerve center for everything. I think I might even consider 6 twin sockets not to be that outrageouse these days. What does the client want to pay for is the other question?
