Royal Marines will patrol the River Thames today to make sure there is no disruption to Oxford and Cambridge Boat Race.
The two universities will compete in the 159th race, Cambridge are chasing back to back wins for the first time since 1999.
Royal Marines will patrol the River Thames today to make sure there is no disruption to the Oxford and Cambridge Boat Race.
Organisers are trying to stop any repeat of last year when the annual race was stopped by Trenton Oldfield, who swam into the path of the crews.
The race's Executive Director, David Searle, said: "We are taking additional measures this year and have reviewed all of our actions last year in detail.
"The Boat Race course is four and a quarter miles long so we have eight and a half miles of riverbank to manage and monitor.
"What I would say to anybody thinking of disrupting the race is that it's unbelievably dangerous. You risk injuring yourself, the crews and the other people following the race.
"Nobody wants that to happen. This is just a sporting event."
The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
A 37 year old man who was taken to hospital after getting into difficulty in a stretch of water near Maidenhead has died.
Jonty Bravery, who is mentally ill, has been jailed for 15 years after throwing a six year old boy from the Tate modern balcony.