Thanks to Facebook I just found out what to do with the punctured paddling pool that I could not bring myself to put in the bin (tried to repair it with clear Fablon but that did not work). There is a company on the Isle of Wight that recycle inflatable toys. They make them into bags and (they say) will refund your postage.
Wyatt and Jack Inflatable Amnesty Unit 7 Weavers Yard Lane End Bembridge IOW PO35 5US