No winners for last week's odd one out. The correct answer should have been the top image of Queen Elizabeth Hall on London's South Bank.
The other two images share a Hall connection: one was of Great Notley School in Essex by Allford Hall Monaghan Morris, the other was of model and actress Jerry Hall. Better luck next time.
To win a bottle of champagne, send an odd postcard with the correct answer by first thing Monday morning please to: AJ Astragal, 151 Rosebery Avenue, London EC1R 4GB, or in an emergency, fax your answers to 020 7505 6701.