Metal grid mesh , or similar metal mesh metre square (Thorpe St Andrew NR7)

I'm looking for a metre square. of sturdy mesh to put under a new compost bin which will sit on gravel or earth, to make it vermin proof. I've used chicken wire triple folded before, but that's not suitable for this location. Any offcuts I can secure together welcome if not a whole sheet. I dont want to buy and waste 10 sheets
which is all i can find! . Thanks if you can help.