A stray firework sparked a fire on the EastEnders set hours after the first live episode marking the show's 30th anniversary was screened.
The blaze, in Dr Legg’s old surgery on the set at Elstree studios, was believed to have started accidentally shortly after 11pm.
Fire crews from Borehamwood and Potters Bar were called to the blaze located in the first floor and roof of the building on the Albert’s Square set.
Area commander Ian Parkhouse said: "Thanks to the hard work of our firefighters, the fire was contained and extinguished before it could cause any serious damage to the set.
"We're pleased that we were able to deal with this incident quickly, so it shouldn't affect the 30-year celebrations taking place this week."
A spokeswoman for the show said: "There was a very small fire on set on Tuesday night after rehearsals had finished. It has not affected any #EELive week plans and nobody was harmed."
