getting rid of double mattress

As MawB said, use the plastic from the new mattress.
Dust sheets are large. Tape them together.

Esspee

Responsible companies will not remove the old mattress when delivering the new one because of the risk of transferring bed bugs etc to the vans. I

They will. They seal it in plastic first though.

Responsible companies will not remove the old mattress when delivering the new one because of the risk of transferring bed bugs etc to the vans. I

Yes it’s still on YouTube how to cut a mattress in half . It looks good . Might take a while. But would save money rather than taking to the tip .

There Was something I seen on I think it might have been on YouTube How to dispose your mattress it looked really good. Not sure if still on there !

Thank you

I paid the new mattress delivery men to take the old one away.

When I bought a new mattress a couple of years ago the delivery people took my old one away when they dropped off the new one,ask if they provide such a service.

We bought a plastic dust sheet from B&Q (v inexpensive) and it completely covered the mattress, which stood outside in the front garden for 2/3 days, awaiting collection.

It rained during the time, but the mattress stayed dry.

Have you just had a new one delivered?
The plastic sheeting from that perhaps. Or failing that cut up several black bin bags and sellotape/parcel tape them all round it?