Paul McCartney was waking up to the start of his third marriage today after tying the knot with American heiress Nancy Shevell.

Paul McCartney and American heiress Nancy Shevell smiled and waved as they arrived at a register office for their wedding today.

Paul McCartney will marry for the third time today, tying the knot with American heiress Nancy Shevell in front of close family and friends.