I see he also has 7x15 wheels also which are 41/2" PCD and are off a Scimitar which is not the same as fords. Performancealloys.com do spacer/adapters but you would have to contact them to see if they have suitable ones but then they may make the wheels stick out too far. Probably worth asking the seller what the offset is.
Yeah Ive got a space saver which most madern cars have these days (If they have one at all) although it doesnt fit the front, have to swap a rear to the front and stick the space saver on the rear. I can't ever remember being asked by insurance compnies if the cars MOT'd.