Here are links to other sites you may find of interest

Amateur Orchestras in the North West 
  A comprehensive listing.

Fuller Music
   Possibly the only major specialist supplier of string music in the UK

Brian Hughes Music

Cameo String Quartet of Lancashire
  Providing music for weddings, parties and other functions

Phoenix Strings
   Under the direction of John Foster, the group aims to encourage lapsed string players back into performing and to give late starters the opportunity and encouragemant to play in an ensemble. 

The Violin Shop, Blackpool
   Restorers, repairers and dealers in all stringed instruments, bows and accessories.

IMSLP/Petrucci Music Library 
   Free public domain library for scores and sheet music. Over 3,000 composers, over 58,000 scores.