The new IP from Dreamworks hits the top with a weekend gross of £5.4 million which is about average for an animation from the studio, Kung Fu Panda 3, the last film from them took £4.7 million on its opening.
If things go as usual Trolls could get somewhere in the £10 million mark especially with a fairly decent debut.
The Girl on The Train falls from the top this week after a couple of weekends at the top, a £2 million weekend takes the film to £17.7 million after 3 weeks of release.
Also new this week is Jack Reacher Never Go Back which lans in the runner up spot with £2.6 million, this is in the ballpark, but lower, of the first film with took £3.5 million on its debut.
Longest running film of the week is The BFG which has been around now for 13 weeks and the highest total grossing movie is Bridget Jones's Baby now on £44.5 million.
Historical charts
A year ago - Hotel Transylvania 2 stayed at the top for a second week while top new film was Paranormal Activity The Ghost Dimension at number 3.
Five years ago - Halloween took Paranormal Activity 3 to the top of the box office on its debut while Johnny English Reborn fell to number 2 after 3 weeks.
Ten years ago - The Departed stayed at the top for a second week while highest debuting film was Barnyard at number 3.
Fifteen years ago - American Pie 2 stayed at the top while America's Sweethearts made its debut at number 2.
Twenty years ago - New at the top was the fantasy film Dragonheart while The Nutty Professor fell into the runner up spot after 2 weeks at the top.
Twenty five years ago - Making its debut at the top was City Slickers while Drop Dead Fred fell to number 3.
