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.
More top news
Gary Davies, 50, is believed to have known the victim, 56.
The couple, married for more than half a century, had recently retired to Mount Pleasant.
Four EU countries in eastern Europe refused to take part in the meeting