2A rotten parts!

hi all, i have finally managed to find a series 2a that i could afford and have got it home.
i knew it needed the drivers side floor sorting but as there are parts there to replace i thought i can weld those in.
the prob now is i have got right underneath and found 2 what i thought were cross members under the rear floor section are knackered, 1 is rotted through and hanging off and 1 is completley missing.
can anyone tell me what these are called? they should be under the rear floor area and look as though they are pressed steel and go across the top of the chassis with both holes that go up into the rear floor alloy
can anyone help and also any idea where to get them from.
appart from these parts there aint much wrong with it, its a bit manky but im happy with that, but i want to get on with it so i can get it re-MOTd asap.
thanks in advance for any help.

they are cross members

MUC8949 REAR BODY FLOOR CROSSMEMBER | shop | www.lrseries.com | L. R. Series

Just drill out the rivets and slide them towards the rear crossmember. It should be possible to get them out sideways where the chassis drops down.

hello again,
are they only rivetted on? if so then thats easier than i thought, i was thinkin the whole rear body had to come off to weld new one is.
where is the best place to get parts like this?
anyone know of a good friendly spot in north yorkshire?
many thanks

Try LRSeries near Pocklington. they have a website if ya google em.

LR series are very helpful and reasonable on price or you could try paddocks at Matlock, also on the web.