Sir – Roger Blackburn (Letters, April 7) asks what he may do in retirement now that he does not have to sort household rubbish. He is clearly a man with public spirit.

The answer to his question is that he could join me in forming a pressure group to shame the Highways Agency into cleaning up the most squalid road in the country — the A34 round Oxford. And why is the most squalid part of all that stretch between Milton and Chilton – is it coincidence that this joins the landfills at Didcot and the rubbish transfer station at Chilton?

David Knowles, Sutton Courtenay