I've looked this up in the owner's manual & it talks about detaching several of the clips holding the 'fender liner' to the wheel arch; i.e. the bit of black plastic between the wheel and the wheel arch. Sounds all very straightforward except the plastic clips look extremely fragile and presumably they're bound to snap. Any tips on how to avoid this or does anyone know where I can get some more of the right size clips in anticipation? Thanks very much.
You can pry the inner part of the clips out a bit with a screwdriver (or a special "fork" tool should you have it) You can find new ones on ebay, like this: https://www.ebay.co.uk/itm/299Pcs-C...184059&hash=item33eb05440a:g:gjkAAOSwBXhbAkQJ