Yamaha UK : http://www.yamaha-motor.eu/uk/products/motorcycles/125cc/ybr125.aspx?view=techspecs
Yamaha India: http://www.yamaha-motor-india.com/product/ybr125/specs.html
YBR125 Uk = YBR125 India + Front Disk + Better Aesthetics + 5th gear
so not a lot as such. might be less expensive to import one from Ind
£8995
£3750
£11995