Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

Ok my problem is that I have my 1st ever MOT due very soon as the current one runs out in a few days . I have got a rust hole in the boot under the spare tyre its slightly bigger than a 50p piece and you can see right through to the road (yikes)
Would this be an MOT fail ? if so could somebody please give me some advice on how to fix it and what to use . Also I have that annoying corsa b problem where the exhaust is touching the rear axle any advice on how to fix this would be appreciated , I worry that when the MOT tester gets in and moves it he will hear it scraping and think what a junkheap before he has even starts doing anything !
everyone has been very helpful on this forum before and any advice from members would be brilliant thanks.

my first car was a 205 and that had 2 holes in the boot and it passed but it wasn't at the spare wheel so not totally sure about that and my corsa has just passed it's mot and my backbox is sitting on the back axle. hope that helps mate

You should be fine i think - i see a lot of cars driving around with rust holes in. I think they are only looking for rust in certain structurally important areas such as the A and B pillars

Shouldn't be as its not a structural panel.
Stick a rubber bung in it.

if your that worried just stick some tape over the hole..they cant fail u on what they cant see lol.and usually new mountin rubbers sorts out the problem of the exhaust on the axle.

Thanks for all the replies sorry I didnt reply on Monday but the site seemed to be down , thats great news about the holes being ok . Last night I got a big chunk of hard rubber and wedged it between the rear axle and exhaust and straight away all those bloody noises have gone . You guys are great . cheers.
Hopefully I will pass MOT but if not I will be back for advice if any problems .