Sorry @Ifeelfat but I think you need to give more information, or all you'll get is people saying where they once enjoyed living / where they currently live.
You'll get a lot of "Blackheath, Wandsworth, Queens Park, Hither Green, Herne Hill, Dulwich, Tooting, Balham, Twickenham" etc....because this is Mumsnet! People who have kids want to live in reasonably green, affluent-ish or up and coming places with cafes, restaurants, big parks, zone 2 or 3, train line.
Are you childfree or do you have DC? Do you want to live somewhere quiet, but spend your time jumping on a train to join the action in the West End? Or do you want to actually have some action in your back yard you can go to?
And by West End, are you strictly Soho? I have been going out in Shoreditch/Hackney for the last 15 years and I would consider that more West End than the West End is these days if you know what I mean.
Sorry for all the questions but I think they're relevant .
Oh and if we're reeling off wish lists of places we'd loved then I would say -
Peckham (buses will take you to West End)
Brixton
Queens Park