Boat Race protester Trenton Oldfield has been refused permission to remain in the UK after the Home Office decided his presence was not "conducive to the public good".
The Australian, who disrupted last year's contest between Oxford and Cambridge universities by swimming into the path of the crews, was jailed for six months for his actions.
Oldfield, who was watched by millions of television viewers as he halted the race, was found guilty at London's Isleworth Crown Court of causing a public nuisance.
During his trial, Oldfield told the court that the race was a symbol of elitism and that London was blighted by inequality.
A Home Office spokesman said: "Those who come to the UK must abide by our laws. We refused this individual leave to remain because we do not believe his presence in this country is conducive to the public good."
Victorious rower Karl Hudspith has praised his team and their opponents for putting on a "real boat race" after his Oxford crew won on the Thames.
Karl was the President of the Oxford University Rowing Club when his team lost in 2012. He took to Twitter to express his frustration that the race was disrupted saying "To Trenton Oldfield; my team went through seven months of hell, this was the culmination of our careers and you took it from us".
He was joined by the current President Alex Davidson in this years crew.
A year ago I was carrying my friend's body on a stretcher thinking a few moments ago he had died. That was pretty much the worst moment of my life.
You can sit around in bitterness and anger or put it past you and get back to work. That was a real Boat Race.
That was a really epic race. That was the race I have been waiting for these last couple of years. This is a very different feeling
– Karl Hudspith, Rower in the winning Oxford University boat
Matthew Pinsent, who umpired the race for the first time, said it had been a "busy but enjoyable experience".
The four-time Olympic rowing champion, who won the race with Oxford in 1990 and 1991, said: "It goes very quickly when you're in charge of umpiring it."
Asked if he had been concerned about security going into the race following last year's incident, he said: "Thankfully, not my responsibility. The ramifications would have been interesting - I would have had to sort out the race if there is an interruption but thankfully nothing happened."