As requested here is a list of UK suppliers, if you can think of any more please PM me and I will add to the list.
SUBLIBLANKS
LISTAWOOD
IMAGINE-TRANSFERS
ISUB SUPPLIES
BMS
CORALGRAPH
XPRES
ETC SUPPLIES
MDP SUPPLIES
MEGA UK
MERLIN TRANSFERS
NOVACHROME
RA SMART
REVOLUTION TRANSFERS
SUBLIMETALS
SUBLI
T-SHIRTS AND MORE
TARGET TRANSFERS
THE TRANSFER PRESS
THE MAGIC TOUCH
TRANSFER SUPPLIES
DYE SUBLIMATION SUPPLIES
BUY SUBLIMATION (Neil Brothers)
SUBLIMATION DIRECT (Neil Brothers)