Nissan Micra cutting out

[Swiper]

My M-reg Nissan Micra keeps cutting out. It only happens when I have to slow down and go into a lower gear and it happens when I have been driving for about 30 mins or so. For example I was slowing down for some lights the other day and it just cut out and it took me about a minute to start up again.
It has just passed its MOT with flying colours and it was in the garage about 3 times previous but they couldn't find a fault. Does anyone have a clue as to what it might be?

[markja]

my daughter had a similar fault on her micra. we couldn't find it. eventually i found the lead from the battery had corroded inside its plastic covering so it wasn't visible. it had turned to green dust. ( it was within four inches of the terminal )
i just cut the wire & soldered a new lenth in place and it was right as rain after.

[LAW_DROP-OUT]

Markja... had a good answer for you..... my mother on a M reg Micra .... again . had a "brake master cylinder 2..that would seize on afetr about four of fuve miles,,,,, replacement new master cylinders , were apparently only available from main dealers.... at about - �120 plus fitttinf etc..... !!!car wouldnt move until the master cylinder went back released it self !! , in it s own time... stranded !!