SIR – I must reply to Colin Coates’s letter (T&A, June 6).

Myself, my wife Christine, and our seven-year-old twin grand-daughters Amber and Tegan did the Aire Sculpture Trail walk last Sunday.

What a great time we had. The sculptures are fantastic, the girls absolutely loved them. A lot of effort has been put into this project and it shows. Well done to everybody concerned – you have done a marvellous job.

Yes, Colin, it is extremely childish, and they loved it.

Bill Arnold, The Grove, Idle, Bradford