The Schneider range look like a good option, and R&B Star (wtf is that name about, ha) definitely are the cheapest around for them.
Issue is, with all the switches and sockets I need, the total cost will be more than £1600! 
The other thing with them is that they only have sockets in polished chrome, but modular switches in mirror steel, two noticeably different finishes. There’s no unified chrome that covers everything. May need to go with Stainless (my preference anyway as I don’t want to be polishing everything every 5 minutes).
Look forward to starting to pull everything together!