Whilst she’s a freecycle addict with a lot of our stuff from there, I’m not sure how Mrs MJ will feel about a used mattress. Will ask her to have a look though.
A quick google didn’t bring up any crazy prices but Is a sub 100 quid mattress going to be rubbish.
We do have an IKEA one on an IKEA bed, which I need to try for size -thanks for the reminder as I was assuming it would be too long.