The 73-year-old news anchor said he was "deeply grateful" to the couple's surrogate.
The broadcasters' comments sparked more than 2,600 complaints to the regulators.
Over 2,600 people complained about the remark.
The presenter made the remark while commenting on the pro-Brexit march.
"I have never seen so many white people in one place, it’s an extraordinary story."
Rumour has it Kit Harington and Rose Leslie are engaged!
Lingerie and costume brand Yandy.com has created a sexy Jon Snow costume - just in time for Halloween shopping. The ‘Game
'When it came to Grenfell Tower, I was haunted. I still am.'
Jon Snow has said journalists were too distracted by Donald Trump and the “political flatulence” of Brexit to focus on the