Clement, on a bus travelling the 25 miles from Heathrow Airport to the Olympic Village in Stratford, tweeted saying: “Um, so we've been lost on the road for 4hrs.
Not a good first impression London. Athletes are sleepy, hungry and need to pee. Could we get to the Olympic Village please.”
Clement won the world title in 2007 and 2009 and is also the defending Olympic silver medallist.
A bus with 30 Australian officials also reportedly lost its way, with the party taken past Buckingham Palace and the back streets of West Ham on the lengthy trip to the Olympic Park, according to the Telegraph.
Their journey reportedly took three hours despite it being one fast-tracked Olympic lane.