I don't want to sound too mainstream but I think Linn Akurate 242s are the best speakers they've made for a long time. I'm not sure what the UK retail price is but I think you could lay your hands on a pair for £4000, maybe a demo pair. I agree that ultimately there'd have to be a Velodyne DD15 too, and then there's the active crossover boards and the 10 channels of amps you need to get the best out of them