Arup's library sent me a copy of Ed Dorrell's article (AJ 12.2.04), followed by a copy of Max Fordham's letter (AJ 19.2.04).
I would like to correct one assumption in Fordham's letter.
Dorrell's article was based on a telephone call to me, and the opinions expressed were entirely mine. There was no communication with Arup Acoustics and therefore 'Arup's sour grapes' could not be part of the equation. Max knows me well enough to understand that since my retirement from Arup in 1998, my main interests in life are sleep, food and wine, music and arguing. I am not aware that 'sour grapes' are included.
Derek Sugden, Hertfordshire