The SIA licence would automatically be revoked:
http://www.the-sia.org.uk/home/licensing/revok ed/licence_withdrawal.htm
The licensing authority responsible for issuing personal licences for the sale of alcohol have discretionary powers. The licence would not automatically be revoked but it might possibly be. (I've known of someone who's still been on licence after release from prison, for trafficking Class A drugs, obtaining a personal licence to sell alcohol. The conditions are far less strict than they are for an SIA licence).
Chris