The London Fire Brigade said two flats on the first and second floors remain alight at the building.
Charles attended the show for the first time as patron of the Royal Variety charity.
The incident happened on the day the King had an egg thrown at him in Luton before returning to the palace to host a reception
A brain tumour expert said that although they are not cancerous, colloid cysts can require major surgical intervention.
The cold front comes after weeks of mild, above-average temperatures.
Human rights activists wrote to the King during King Hamad Al Khalifa of Bahrain’s visit
Off-duty officer arrested on suspicion of causing serious injury by dangerous driving after Rochdale collision