if you know any stores at the center(propably 1or 2nd zone)..
None. They are all South of London on the Coast (as well as being on the Coast in other parts of the UK), or online.
Nearest ones on the South Coast are:
- S2AS (Surface 2 Air Sports)
- Boardworx (formerly Whitstable Windsurfing)
My mate (pimpage) runs Gower Kite Riders - good for North equipment.
Other good online stores include Kiteitright, and Extreme kites.
Online is fine (unless you want to "try" something) as overnight delivery is fast n cheap in the UK.