Huge cannabis factory uncovered at Legoland

Police found 50 of the chest-high plants being cultivated under heat lamps and an irrigation system in a bungalow at the park in Windsor.

But theme park bosses say the vacant building is inaccessible to the public and “appears to have been accessed via the Crown Estate” - land belonging to the Queen.

Astonished workers discovered the professional set up while looking for asbestos in what is understood to be derelict staff accommodation yesterday.