You can get a copy of your divorce papers from the court where the divorce was processed.  Alternatively, contact the Decree Absolute Service at the following address:

National Divorce Records
First Avenue House
42-49 High Holborn,
London
WC1V 6NP
Phone 00 11 44 - 20 7947 6051

Alternatively, The National Archives in the UK can guide you in looking for records of a divorce.