London has been named as one of the most congested cities in Europe, just as predictions emerge that forecast road travel chaos during next year's summer Olympics.

The capital came third in the gridlocked list, just behind Brussels and Warsaw, with Manchester and Edinburgh also in the top ten according to new research commissioned by sat nav manufacturer, TomTom.

However it appears that London's beleaguered drivers are set to suffer even more than usual next summer, as the full extent of the Olympic travel plans become clear.

Routes around the main sites are set to be hit by restrictions and closures for over a month longer than the games are due to last. The Olympic Route Network will intend to make sure competitors and organisers make it around the congested city as quickly as possible, but could last as long as 100 days - much longer than the 29 days needed for the Olympics and Paralympics.

The plans will see a 108 mile route set aside for the Olympics, and hauliers are saying it will drastically affect how they get goods into the city's shops and restaurants.

We are facing 100 days of disruption, rather than just the 28 days of the games," Natalie Chapman, the Freight Transport Association's head of policy for London told The Telegraph.

"We don't want to be seen as a bunch of whinging truckers, but it is going to be hard if we can't get in there to deliver the goods."

Chrys Rampley the Road Haulage Association's infrastructure manager, said that retailers will have to make special provisions and plan in advance: "We will only be able to deliver between midnight and 6 am. Some companies will not have staff able to take deliveries at this time.

"There will also be restrictions on left turns and right turns, which will add to the mileage. We are telling people to stock up in advance."