The London Fire Brigade has released photographs showing how "badly damaged" the restaurant is, that caught alight this morning.
Fire investigators will be looking into the cause.
Chessington World of Adventures has made a statement following a fire that broke out earlier this morning.
-The blaze has been brought under control but fire officers remain on site
-The park was closed at the time and no guests were involved
-All staff and animals are safe and well
-Chessington World of Adventures in conjunction with the Fire Service are investigating the cause of the fire.
The London Fire Brigade says the fire at Chessington World of Adventures is "now under control".
A large part of the restaurant at the Chessington theme park is alight and fire crews are attempting to bring the blaze under control.
The fire at Chessington World of Adventure is in a cafe which was being used as Santa's grotto over the Christmas period.
During the festive season the park opens for restricted hours and with access just to part of the zoo, this includes the Creaky cafe where visitors could visit the 'Night before Christmas - A Magical Adventure' attraction.