Just let it go and enjoy the show...

Frozen Theatre Royal Drury Lane, London Until June 26, 2hrs 15mins ★★★★★

If you have a child aged between two and 20, the chances are you know all the songs. Every. Single. Word. Maybe you’ve had to pull the car over on to the hard shoulder to deal with your child’s travel sickness while Let It Go blared, somewhat appropriately, from the stereo. And no doubt you’ve seen the film anywhere upwards of 50 times.

For this is Frozen – beloved of children everywhere since the blockbuster movie was released in 2013.

The only surprise about the West End stage version, then, is that it took so long to get here.

Yet I would hazard that even the parents who love to hate it will think it was worth the wait.

While reassuringly faithful to the film version, the format has been refreshed. There are new songs sandwiched between the classics and the casting director has embraced the ‘colour-blind’ trend sweeping theatreland. Young Elsa and Anna are played by a mixed cast of black, white and Asian child actors, which is slightly confusing when they grow up to be white and played by Samantha Barks (Elsa, left) and Stephanie McKeon (Anna).

Their parents – lost at sea in a powerful sequence where the chorus form the waves – are black and Asian respectively.

So far, so woke.

Olaf the snowman is a puppet whose strings are joyously and expertly played by Craig Gallivan.

Meanwhile, Sven the reindeer is powered by humans in a contraption reminiscent of War Horse.

His human master Kristoff (played by Obioma Ugoala) is seriously impressive. How does he dance in all that get-up?

No expense is spared for the special effects – snow falls from the ceiling and icebergs spring up from the floor.

The biggest gasp of the show, however, went to Elsa. Halfway through belting out her famous Let It Go, there was an incredible blink-and-you-miss-it outfit change. Cue squeals of delight from the little girls in the audience – almost all dressed in glittery tiaras as mini Elsa clones.

Absolutely terrific. But what was the verdict from my two children (aged six and three)?

‘Mummy, it was magic!’