Cambridge won the 158th Xchanging Boat Race today - but a potentially thrilling contest was ruined by an intruder in the River Thames.

Oxford held a slight advantage heading into the final bend when umpire John Garrett called a halt to the race after the swimmer narrowly avoided being hit by the blades from the Dark Blue boat.

The race was eventually restarted at the half-way point after a 31-minute delay.

Oxford pulled half a length clear when a clash left six man Dr Hanno Wienhausen with a broken oar.

At that point the race was over and Cambridge pulled clear to win.

Umpire Garrett warned Oxford cox Zoe de Toledo to move across just before the clash.

De Toledo argued the wash in the River Thames was too strong for her to move fast enough but her appeal was rejected.