Workshop recommendation for coilover & top mount setup / London

My car has recently gone through a suspension refresh including B14 coilovers and Compbrake adjustable top mounts. The car drives much, much better but I doubt the coilovers are set correctly, as the rear is sitting lower than the front. I thought I'd do it myself but chickened out a bit so I'm looking for a garage in London (central-ish) that would set coilovers properly and give a bit of camber to the front. It's not a race car (daily, actually!) so doesn't have to be mega precise but I'd like it to be set decently. Any recommendations? Cheers.