rust in battery tray

there is pretty severe rust in my battery tray, is this an mot failure and if so can i just cut out the worst of it out and bolt in some chequer plate until i can get someone to weld it up?

There are a few fixes for this problem.

You can get a new battery box and rivet it in:

021 n s battery box

Or you can do as you say and cut it out and weld it up.

Mine was pretty rusty but not totaly gone so I put a sheet of glass mat into the battery box and fibreglassed it all, I welded two supports accross the outside and will fibreglass the outside too.

ta mate, might try the alloy battery tray

I would, well I wish I had seen it before I fixed my old one.