Thank you. Might have to get it from Newcastle like you suggest. The bit I need can be got from France for 42 Euros, which makes this at £152 a tad annoying..Have you tied some of the other parts dealers? Or give these guys a call https://www.ebay.co.uk/str/mercedesandsmartnewcastle?_trksid=p4429486.m3561.l2563
EDIT: just seen your post in Wanteds - put the part number into google, lots of results