If such a thing is not a contradiction in terms, then this is an intelligent pantomime for intelligent adults and children. There are no soap stars in it - in fact there are no stars at all. There are no cover versions of Robbie Williams pop songs and no double entendres.

Instead London Bubble, one of the best and most enterprising community theatre companies around, dishes up good, committed, generous acting, and a clever script with a strong narrative that brings a new twist to a familiar story, but not too many detours and interruptions.

There is also an entertaining and classic dame in the shape of the little princess's nanny (City and Guilds in projectile vomiting) and some audience participation that doesn't make you cringe but cheer. And it marks the first time in a panto that I've found myself called upon to play about with Einstein's theory of relativity.

Writer and director Jonathan Petherbridge relocates the beginning of the story to wartime Britain, where the heirless king and queen consult a wise old woman about their predicament. The couple are soon the parents of a baby girl but when they refuse to keep their side of the bargain and invite the old woman to their parties, Princess Talia is doomed to prick her finger on her 16th birthday and fall asleep for 100 years.

Then it is fast forward a century to 2056, and if the princess is not awoken with a kiss before the 100 years is up she will die. Only it's hard to find a prince to do the deed when the people have overthrown the monarchy and Britain has become a republic.

The silly moments are really silly, the shivery moments extra shivery. When the wicked old woman settles down beside the sleeping princess to wait for her death 100 years hence she starts knitting: it is like watching Madame Lafarge at the guillotine. The jokes are as old as the hills but still funny: Queen: "You better change that baby, nurse." Nurse: "Did you keep the receipt?"

But it is the way the show plays with the concept of time that is really smart. When Prince Justin arrives at the palace, the princess is already dead. It is up to the audience to cheat time by turning the clock backwards, which turns out to be as easy as tick tock - or rather, kcot kcit.

This is a lovely, inventive treat for all the family that might convert even the most dedicated pantomime hater.

Until January 13. Box office: 020-7242 7040.