Be aware that what you're buying is a grey import, so you may not get the local-spec product (although DigitalRev will do things like sticking a US-UK plug adaptor in the box for you), and they provide their own warranty because the manufacturer's may not be valid for sales outside the official channels.
But if you're comfortable with that, DR's service is impeccable and their prices are just too good to ignore, at least on big-ticket items. Buy an expensive body or lens, and even if you later had to pay for an out-of-warranty repair you'd probably still be ahead.
Connect with Facebook to get one click access to Trustpilot. It's easier.Sign up with Facebook