Royal Marines will be positioned along the bank of the River Thames between Putney and Chiswick for this year's Boat Race. It comes after protestor, Trenton Oldfield was jailed for swimming across the path of rowers during last year's race.
Oldfield was released from prison in December 2012 after serving seven weeks of a six month sentence for causing a public nuisance.
The Metropolitan Police recently contacted him to see if he was planning to protest at the 2013 event. Oldfield wrote back saying "I'll probably have a walk in the Cotswolds instead."
More top news
The mother of a boy who is in a critical condition in hospital after he was stabbed in a street attack has issued an emotional appeal.
A father has described how his eight-year-old daughter was "pelted with coins" during clashes between West Ham and Chelsea fans.
Damon Smith, 19, has been charged with making or possessing an explosive substance with intent to endanger life.