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."
More top news
The majority of parents forbid their child to walk to school because they worry for their safety, an exclusive poll has found.
Singer James Blunt has called his best-selling hit You're Beautiful "annoying".
Owners could be fined £20,000, forced to take their dog to obedience classes or have them neutered if the public complain.