Just had a very positive experience with "Strings Only" on Amazon UK

http://www.amazon.co.uk/gp/aag/main?...A2A0LOHU20G5Z1

Ordered some picks in bulk for half the price of anywhere else (PW Black Ice Heavy x100) and they arrived 5 days earlier than the delivery estimate. Lovely job. They do strings, plectrums, a fair bit of Planet Waves stuff and other things.