Right after some speaking with a local supplier they were able to shed some light on this.
VW part number is:
191-698-151 G for standard G40 and mk2 golf 8v.
EBC Number: DP2517 - 138x49x15mm
191-698-151 for all other solid disc polo pads.
EBC Number: DP2515 - 138x51x17mm
Interestingly the local supplier I used was able to supply the correct EBC DP2517 pads for a G40 for £35.50. EBC list these at £52.34. So cheaper to use a local supplier in this instance.