SIR - Keith Thomson is right to say that Tesco's plastic bag policy is a stunt to boost their green credentials, but misses the point of the Irish policy of charging 10p per bag.

This was not brought in by the supermarkets working together, as he suggests ours should, but imposed on them in the form of tax by a government committed to do something about this totally unnecessary problem.

The fact that it has worked so dramatically well in reducing usage by 90 per cent should not be ignored by our own government, who could very easily follow suit if only they had the guts to stand up to the supermarkets.

Or could Lord Sainsbury's donations to the Labour Party be playing a part here?

Coun Martin Love (Shipley, Green) Farfield Road, Shipley