Romney met Thursday with Prime Minister David Cameron at Cameron's 10 Downing Street residence.
Afterward, the Republican told reporters that there are always a few things that go wrong during the games. He said the kinks get worked out once the athletes take over.
On Wednesday, Romney told NBC News in an interview that it's impossible for a country to stage an Olympics without making mistakes. The comments came as Britain faced criticism for security woes and a blunder over North Korea's flag.
Romney led the 2002 Winter Games in Salt Lake City.