1Paul McCartney Carpool Karaoke
3Royal Wedding - A Bad Lip Reading
It appears people couldn't get enough, even of the spoof version. The third most popular video in the UK was the hysterical 'bad lip reading' take on the royal wedding...
Advertisement - Continue Reading Below
4Courtney Hadwin: 13-Year-Old Golden Buzzer Winning Performance - America's Got Talent
Even though it was an American show, when a 13-year-old British singer stunned the likes of Simon Cowell and Mel B on America's Got Talent, the audition clip proved a viral hit in the UK too.
5Yanny v Laurel
This year's version of the blue or gold dress was Yanny or Laurel, which has been viewed on The Guardian's YouTube account 26 million times.
It's Laurel, by the way. (No, it's Yanny - ED)
6We Broke Up - David Dobrik
YouTubers David Dobrik and Liza Koshy announced their split as a couple in June (six months after they broke up) in a video which has since amassed more than 46 million views. It was the sixth most-watched YouTube video in the UK this year.
Advertisement - Continue Reading Below
7Ariana Grande Carpool Karaoke
Ariana's episode, which saw her drive around LA with James Corden belting out her hits like 'Dangerous Woman' and 'Side to side' and harmonise like only she can was the seventh most watched YouTube video in the UK this year.
8Dogs Tested To See Whether They'd Defend Owner During Home Invasion
Proving that humans will always be intrigued by what their pets are thinking, a clip of American show Inside Edition's experiment on whether dogs would defend their owners during a burglary was the eighth most-viewed video.
9 Marc Spelmann Gets The First Golden Buzzer of 2018 - Britain's Got Talent
Advertisement - Continue Reading Below
10Musical Genre Challenge with Ariana Grande -
Ariana Grande has had a hugely successful year so it's no surprise that YouTube viewers couldn't - and still can't - get enough. She makes the list twice with her musical genre challenge skit on The Tonight Show Starring Jimmy Fallon completing the top 10, with 40.2 million views.
Advertisement - Continue Reading Below
Advertisement - Continue Reading Below
Advertisement - Continue Reading Below