London 2012 organisers are facing a backlash from prospective parents who have learned they will need tickets for their newborn babies – even if they were not conceived when the highly prized seats were bought.

The situation, which has been described as "ridiculous" and "bloody stupid" by angry ticketholders, has arisen because most tickets went on sale last April – 15 months before the Games.

Ticketholders, some of whom will have babies just weeks old and will be breastfeeding, have been told by the London Organising Committee of the Olympic and Paralympic Games (Locog) they can try to buy an additional ticket for their chosen event for the baby.