I've bought 6 bikes from Bike UK and their sister shop in Taunton Ralph Coleman's. All staff have always been friendly and helpful, matching prices and helping out as much as they can, including letting me use their demo bikes for free when mines in for service. Mechanics have always been great, especially Sandy in Taunton and they've always tried to keep the cost down. They have a busy workshop so wait for a service slot can be 4-6 weeks in the summer. Good selection of British bikes including Whyte, Orange and Genesis.