Hi Gabrielle,
I have a Kenwood A701A and recently bought a new liquidiser from Masterspares.co.uk, I spoke to Simon there and he sent my order with the liquidiser base adapted to fit.  You may find that you only need the base.  Give them a try, tel 02380 844338, give the model number of your Kenwood chef.
Good luck
Regards
Karen
                
 Karen Davis
                
 January 2007