Obama's European tour continued with the meeting of important British leaders such as Queen Elizabeth at Buckingham Palace as well the 'Royal Couple' Prince William and Catherine Middleton after his trip to Ireland.

The US president also met with Prime Minister Cameron and both are expected to review various issues involving US-British ties in the fight against Islamist militants, and Libya.

Upon meeting, both had a casual time as they teamed up to take on two students in a game of ping pong. It was reported that the students of Globe Academy got the better of the two leaders.

Click here to start Obama's UK Visit slideshow