Anne,
There are many references to ACCS on this Forum and you will find Martin Barnes very helpful. He is also a member of the forum.
His address is 57-65 Randell's Road, London N1. Tel 44(0)20-7278-9786
His email is
brisparts@aol.com
He is a Bristol owner and has supplied me with parts for 16 years when Bristol Cars had not got them in stock. For engines etc. he is my first port of call.
Hope he is able to help,
Nick