Days of Future Past is now the 4th, or 2nd, or 8th film in the series depending on which way you look at it, and over the bank holiday weekend took and impressive £9.1 million.
Compared to previous film on their debut weekend, X-Men First Class earned £5.4 on it's debut, 3.7 million below, X-Men The Last Stand earned £7.1 million, 2 million below and just for completion The Wolverine took £4.7 million, nearly 4.3 million below.
Last weeks top film, Godzilla fell to number two this week, the monster film has taken £11.8 million in 10 days of release.
Other new film this week are
Postman Pat The Movie at 4
Blended at 5
Fading Gigolo at 11
Legends of Oz Dorothys Return at 13
Kochadaiiyaan at 14
This time last year The Hangover Part III was riding the top of the box office on it's debut weekend knocking Fast and Furious 6 into the runner up spot.
Five years ago Night at the Museum 2 hit the number one spot also on it's debut and knocked Angels and Demons to number two.
Ten years ago Troy moved up to the top spot after it's debut the previous week knocking Van Helsing into the runner up spot, the highest new film was Bad Education at five.
Fifteen years ago debuting at the top was She's All That knocking Forces of Nature to number 3.
It was a hot weekend in the UK with many annual events happening which more than likely had an effect on the takings of Godzilla, but the monster flick, directed by Britain's own Gareth Edwards still managed a stomping £6.4 million.
If you compare this to the 1998 film of the same name that's £2.3 million higher but taking inflation into account this is almost an identical debut gross, although the 1998 film did open mid July.
Last weeks top film, Bad Neighbours, falls a single place this week to number 2 having grossed £11.3 million over 10 days, although much of this was in preview showings a week before the official release.
One other new film charted this week
The Two Faces of January
This time last year Fast and Furious 6 opened at the top of the box office, keeping The Great Gatsby to open at 2, the previous top film, Star Trek Into Darkness, fell to 3.
Five years ago Angels and Demons made its debut at the top knocking Star Trek into the runner up spot.
Ten years ago Van Helsing held the top for a 3rd week while the top new film was The Football Factory at 4.
Fifteen years ago Forces of Nature climbed to the top knocking I Still Know What You Did Last Summer to the number 2 spot.
Starring Seth Rogan and Zac Efron Bad Neighbours had no trouble de-throning the web slinger with an £8.5 million debut.
Spider-Man 2 falls into second place with £1.3 million bringing it's total gross to £22 million after 4 weeks.
Also new this week are:
Sabotage - Arnold Schwarzenegger's latest
La Cenerentola - the latest from the Met Opera
The Wind Rises
Before The Winter Chill
Last year saw the much anticipated Star Trek Into Darkness enter at the top knocking Iron Man 3 into second place.
Five years ago saw JJ Abrahams first Star Trek film enter the box office at the top knocking X-Men Origins: Wolverine into 3rd place with Coraline entering at 2.
Ten years ago had Van Helsing debuting at the top meaning Eternal Sunshine of The Spotless Mind fell to number 2.
Fifteen years ago had I Still Know What You Did Last Summer go to the top on it's first week leaving The Waterboy to have a single week at the top.
UK release date: 7th May 2004
Highest chart position: 1
Weeks on box office: 7