Logically it should be a fail (safety reasons - so your kids can bail if you go mental) but I can't remember an MOT tester even opening a rear door (admittedly it's been a very long time since I dun a mot in that there untidy 'king doom)
I've always pitied anyone who's had to take a door card off on a door that's stuck shut, fortunately it's something I've not had to experience (yet). Maybe you should try working the lock 1,000,000 times before you start. What about taking the card off the door on the other side to see if there are any tricks to it (like fighting against a few screws that you can't see with the door shut). I think I'd raid t'wife's cuttlery draw for a couple of lesser-used knives and bend the tips into right-angles
Someone had to do it on a 406 last year, IIRC. Don't remember the details (and probably irrelevant anyway), but I don't think it was too much of a drama.
Regarding the MOT, as Steve says, you would think it should fail, but if they don't try to open it or it's not specifically on the list, you may be OK.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
I'm pretty sure that both front doors need to be working but the back doors just need to be secure. Of course, if Mr Tester decides that he needs to access the rear cabin area for any reason (e.g. to check the seatbelts) and he can't open the door then he might get pissy.
Playtime_Fontayne wrote:"Dai Rees Supplier of Fine Automobilia. Established 2007"