Aveox 27/26/1 (Y)
generic recipe:
Aveox xx/yy/z (w)
xx: motor outer diameter (in mm)
yy: rotor (magnet) length (in mm)
z: # of turns on the stator
w: Y (wye) or D (delta) termination of the stator coils. Aveox basically only makes Y winds these days. Y is higher torque, D trades torque for RPM (faster).
So the 27/26/1 Y is a 1.1" (27mm) diameter motor with a 1" (26mm) long rotor magnet and a 1-turn stator.
I'm not sure where to get Aveox motors in the UK, but in the US I would buy from Diversity Model Aircraft.
http://www.flydma.com/