He can use his likkle ammerIt depends on how severe the rust is. The driver's side would appear to be the worse of the two. It is within 30cms of the seat belt mount. The Mot tester can't (shouldn't) poke it through. But, as above, it will pass at some stations and fail at others.
oo mine are pretty bad nearly as bad as alexdon's and the mot is on monday. ah well fingers crossed
Also look under wheel arch where pillar comes down,rust hole here MOT fail.
I dont know about others but my MOT man if presented with a clean car he goes around tapping with a toffy hammer, present a crud coverd one and out comes a great big screw driver that gets jabed in hard.