Santa goes from festive favourite to foul‑mouthed man as he apparently tries to evacuate a building after smoke alarms go.

A Santa Claus has been criticised by parents after he allegedly swore at children.

The Santa, whose human alias has not been revealed, had been in his costume at a family event in Cambridgeshire, when fire alarms were activated by smoke from another event nearby.

Parents said the festive favourite had then "ripped off his hat and beard" and "used the most vile language", shocking the dozens of children who had been waiting to meet him.

One parent said people were in the process of vacating the building and in came angry Santa swearing using the most vile language, ripping off his hat and beard with steam literally coming from his ears.

Responding to complaints, Festival Events St Ives said Santa had "immediately assisted in the evacuation of the building" after the alarms went off at the Sunday event.

"FESt wish to apologise for any offence or distress caused to parents and children by the attempts to ensure all visitors and staff had exited the building and were safe."