Dunedin use Kwik-Fit Mobile for their tyre fitment - it's a bloke in a van who comes to the dealer - may well get a better price going direct - but then again maybe not. Think my work have an account with them so may try phoning direct when it comes to new tyre time!
£87 for a runflat 195/55/16 is a great price! happened to go into a kwik and check prices of a standard type tyre at that size and none of them were below £100!