I was just looking at the 2012 website to check travel and saw this:
http://www.london2012.com/spectators/visiting/families/
"Babes in arms aged 12 months and under will be permitted access to London 2012 venues without a ticket provided they are securely strapped to their parent or carer by way of a baby carrier, sling, papoose or similar.
This policy applies to all London 2012 venues except the following, where there are existing licensing agreements that mean all spectators must have a ticket, including babies aged 12 months and under:
Wembley Stadium
St James' Park
Old Trafford
North Greenwich Arena
London 2012 venues will be extremely crowded and you will have to queue. Because of this, we would advise you to think very carefully before making the decision to bring you baby along to your event.
Parents of babies must adhere to the LOCOG bag policy – that is one bag per ticket holder which must be soft-sided and a maximum of 25 litres. Furthermore, parents must adhere to the food and drink policies for spectators."
No quite sure where we stand now. This seems pretty clear but completely contradictory to everything gone before!!!!