"George.com" wrote
snip
I use large supermarket plastic bags for bin liners (I need about 1 a
week) snip

I do that too.

Over here the major supermarkets provide a bin for recycling their old
used plastic bags. Perhaps you could get them to do the same where you
shop. If enough people demanded it they should listen.

The bigger places also do large boxes made of recycled plastic that you
buy and then use each time you shop.

I recall my local Sainsbury's providing paper sacks at one time but that
didn't seem to last long. I think people probably didn't find them
durable enough, e.g if it was raining, and handle-less bags are not much
good for anyone without a car needing to carry shopping home. I've also
read that paper sacks use more resources to make and transport than
plastic ones.

--
Sue