SIR - Replying to Cynthia Trasi (T&A, May 4) I wonder if she can explain how, if the whole world's population turned vegan, the reduction in animals would be gradual?

I know the whole world will not but it is obviously her and Heather Mills McCartney's wish that it would.

I repeat if it did our landscape would be altered forever and cows, sheep and pigs etc would all become endangered species.

It won't happen, Ms Trasi, so you can continue to support Heather, safe in the knowledge your extreme moral high ground is safe.

Philip Bird, Nab Wood Terrace, Shipley