Fitted bedsheets or cot sheets (bexleyheath DA7)

I’m looking for fitted bedsheets or cot sheets. Maybe you have old ones that haven’t been used for years sitting in the linen cupboard?

Preferably white or any colour will do.

It’s needed to cover a number of skylights/roof windows to keep the sun out.

Will need quite a few, so any you have that you want to get rid of will be great!

Can collect asap if local please.

Thank you