P
Paul_C
AIUI - if it's a full renovation or new build, then sockets should be between 450mm and 1200mm above finished floor level.
Part M (the section on accessibility) of the building regulations doesn't apply to a renovation of a dwelling, only to a new house, so you can put them at any height you choose. And even for new homes, remember that the 450 & 1200mm figures are only guidelines in the Approved Document, not absolute requirements.
A couple of recent threads on the topic:
//www.diynot.com/forums/viewtopic.php?p=2073137
//www.diynot.com/forums/viewtopic.php?p=2070103