London fog Friday delayed the departure of US President Barack Obama from London as he and his wife were forced to make their way to Stansted airport by road rather than the presidential helicopter, the Press Association (PA) reported.
The President and his wife Michelle had been staying at the US ambassador's residence in central London following the conclusion of Thursday's summit, and were travelling to Strasbourg in France where Obama will join a summit marking the 60th anniversary of the NATO alliance.
The President had planned to fly to London's Stansted airport, some 50 kilometres north-east of the capital, in his Marine One helicopter, but used his armour-plated limousine instead as visibility was poor.
Airport officials confirmed that Obama and his wife travelled to Stansted by limousine, reported dpa.
Visibility at the airport was down to less than 100 metres as the presidential plane, Airforce One, took off shortly before 0745 GMT Friday.