A weekend gross of £17.7 million means the film is less than a million behind the multi superhero film.
The second Avengers movie went of to make just shy of £50 million so Black Panther could well go over that mark in the coming weeks, the first Avengers movie, Avengers Assemble is the top grossing Marvel movie at £51 million.
Falling to number 2 this week is Fifty Shades Freed which takes £2.7 million in its second weekend for a £13.3 million total so far.
New at number 3 is the critically praised The Shape of Water from Guillermo del Toro, a £2.4 million debut isn't hit top debut, Hellboy II: The Golden Army did better, but its right up there.
Holding on at number 4 is The Greatest Showman which has now been around for 8 week and is the top grossing film of 2018, so far, and has taken an amazing £30 million.
Finally Coco from Disney Pixar is still in the top 5 and has now taken £15 million over 5 weeks.