Royal Marines will be stationed in inflatable boats along the length of the Boat Race course on Sunday to ensure the event is not disrupted by another protester, organisers said today.
Last year's race had to be halted when Trenton Oldfield swam into the path of the two crews and narrowly avoided being struck by an Oxford oar.
Oldfield, who claimed to be protesting against elitism, was released from prison in December having served seven weeks of a six-month sentence after being found guilty of causing a public nuisance.
More top news
Hundreds of pupils from Alperton Community School in Brent, London,cheered and waved flags as Andria Zafirakou arrived holding the prize.
The Novichok incident in Salisbury has turned into an international diplomatic crisis. But how bad could things get? Adam Shaw reports.