I've used merlin on numerous occasions. I've bought components, frames, custom wheels and other bits of kit. They've always arrived the next day (apart from the wheels as they needed to be built) and they've always been what I've ordered. They are available to chat to on the phone and give good, impartial advice. They don't have the biggest selection of kit online, but what they have is good and usually very well priced. They're the closest you'll get to an LBS online and I would recommend them without hesitation.
Connect with Facebook to get one click access to Trustpilot. It's easier.Sign up with Facebook