McDonald's Fries // McDonald's Fries(Wikimedia Commons)

McDonald's, one of the official sponsors of the Olympic Games 2012, forced Olympic chiefs to ban all other food retailers from the games' venues after signing a sponsorship deal that would make the restaurant the only one allowed to sell chips at the event.

Other food providers even had to negotiate special rights to serve chips and fish, but no one was allowed to sell just chips.

However, the chip embargo, as the Guardian called it, collapsed after caterers complained that staff were angry about not being allowed to purchase chips from anyone else but McDonald's. The food retailers resorted to pinning up posters, telling their customers, "Please understand this is not the decision of the staff who are serving up your meals who, given the choice, would gladly give it to you, however they are not allowed to. Please do not give the staff grief, this will only lead to us removing fish and chips completely".

However, the London Organising Committee responded to the pleas, effectively putting the embargo on hold in the venue being worked on for the opening extravaganza. The embargo still holds in other areas, however, which means that spectators cannot have chips with anything else other than fish, unless they have their meal at McDonald's.