Goonies go to Glastonbury..

THE YOUNG KNIGHTS ARE ALL RIGHT IN

“WHEN men’s hearts have grown hollow and the land is leaderless, she will rise again,” reads an ancient prophesy in this delightful children’s fantasy.

Writer-director Joe Cornish isn’t predicting a last-minute Brexit victory for Theresa May (it’s not that kind of fantasy) but the return of Morgana Le Fay (Rebecca Ferguson), King Arthur’s witch of a half-sister.

Apparently, the evil sorceress has been biding her time in the roots of an ancient tree.

When Britain enters a new dark age, she will let loose her army of flaming horsemen and enslave us all.

Suddenly, Project Fear doesn’t seem that scary. Parents should appreciate the topical edge (“GLOOM” reads a rubbish mock Daily Star front page), but Cornish is mostly playing to their little Guineveres and Arthurs.

And it mostly works. In his last film Attack The Block, Cornish riffed on alien invasion B-movies he loved as a teenager.

In his second labour of love, he’s trying to resurrect the family adventures of the 1980s.

His idea is to transport Arthurian legend to a drab suburb of modernday London.

His Goonies-like heroes are a group of everyday school kids who, after a sword is plucked from a stone, become knights of the extendable Ikea table.

“Gone on quest to save Britain,” reads the note 12-year-old Alex (Louis Ashbourne Serkis, son of Andy) leaves for his mum (Denise