Here is a list for the UK, it would be useful for any other countries to be added, and thanks guys for the links.
County
City
Dealer
Phone Number
Birmingham
Coleshill
Bikers World
0121 314 5883
Cambridge
Girton
Haywards of Cambridge
01223 276128
Channel Islands
St Ouen, Jersey
Alternative Motorcycles
01534 482261
Cornwall
Bodmin
Lanivet Motorcycles
01208 831314
Co Durham
Darlington
DT Mackenzie
01325 465045
Devon
Exminster
Berrybrook Motors
01392 833301
Dorset
Dorchester
SJR Bikes
01305 259778
Dorset
Wimborne
Three Cross Motorcycles
01202 824531
Essex
Romford
Steads
01708 740040
Essex
Southend of Sea
John Parker Motorcycles
01702 612859
Gloucestershire
Stroud
BVM Moto
01453 762743
Hampshire
Eastleigh
Spike Island Motorcycles
02380 650680
Herefordshire
Leominster
Watsons motorworks
01568 612330
Hertfordshire
Knebworth
Jacksons Garage
01438 812928
Isle of Man
Ramsey
Royal Enfield @ Floods
01624 814307
Isle of Wight
Bembridge
Bembridge Motor Services
01983 873744
Kent
Maidstone
C&C Motorcycles
01622 817703
Canterbury
Robinsons Foundry
01227 378440
Lancs
Preston
Royal Enfield Preston
01772 561177
Lincs
Grimsby
Jim Allen Motorcycles
01472 823122
Stickney
Tempest Garage
01205 480252
Leics
Shepshed
Charnwood Classics
01509 508905
London
Hanwell
Reg Allen M/Cs
0208 5671974
Merseyside
Liverpool
Bridge Road M/Cs
0151 9242369
Northamptonshire
Great Oxendon
Rockingham Classics & Sports
01858 439945
Oxon
Didcot
Oxfordshire Royal Enfield
01235 705100
Shropshire
Shrewsbury
Midlands Royal Enfield
01743 467746
Somerset
Taunton
G V Bikes
01823 276012
Staffordshire
Stafford
C G Chell Motorcycles
01785 242356
Suffolk
Copdock, Ipswich
Washbrook Motorcycles
01473 730282
Surrey
Horley
T Northeast Ltd
01293 783229
Surrey
Ripley
Richardsons Ltd
01483 225322
Sussex
W Worthing
Motorsense
01903 823880
Tyne & Wear
Newcastle
Royal Enfield Newcastle
0191 2723335
Warwickshire
Alcester
Arden Motorcycles
01789 400222
Worcs
Kidderminster
Motorcycle Mart
01562 824259
E Yorks
Beverley, Hull
R M Motorcycles
01482 887886
E Yorks
York
Transit Motorcycles
01904 637169
S Yorks
Doncaster
Needhams Bike Centre
01302 328846
W Yorks
Cowling, Nr Keighley
D&C Classics
01535 630137
W Yorks
Huddersfield
Earnshaw's Motorcycles
01484 421232
IRELAND
N.Ireland
Cullybackey
Hill Top Motors
02825 881666
S.Ireland
Waterford
Sheehan's Garage
00353 51880185
SCOTLAND
East Lothian
Tranent
Eclipse Motorcycles
01875 611400
Dumfries & Galloway
Lanholm�
A7 Royal Enfield
01387 381513
WALES
Carmarthen
Johnstown
RJ Motorcycles
01267 233906
Vale of Glamorgan
Cowbridge
Llandow Classics
01446 771160