No no no!!
Early Berlingo's had SOLID 266mm brakes on - you don't want them! They'll be on a BOSCH caliper with a 48mm piston - it'll be smaller and have 48 printed on the top. AVOID. Look for ones from 1.9D and 2.0's to be safe. After 2002 to be even safer! The ones you want have 54 on them
The reason your mates discs didnt fit is there was a changeover around 2001/2002 where the discs were made thicker, with a different offset and the caliper changed from Lucas/1-bolt BOSCH to all 2-bolt BOSCH. My guess is you have a lucas caliper and are trying to fit a newer disc.
The caliper shown ground down above is a lucas one, I've heard more and more frequently that the later BOSCH ones don't need grinding.
Go read up in here if you dont mind hopping onto 106oc, should help -
http://www.106owners.co.uk/forums/sh...d.php?t=130394
You only need to grind the top of the caliper if you're running very very tight 14" wheels with balancing weights on the inside - they fit most 14's without a problem so wheel fouling really shouldn't be in the equation