Nervy Brits are being provided official notices to place in their windows telling the Christmas carol singers to stay away.
Police and neighbourhood watch organisers in one area of Lancashire handed out yellow postcard-sized signs, which are also being handed out at libraries and GPs' surgeries, to nervous residents.
"Sorry no carol singers, I won't open my door to you," the Telegraph quoted the sign as reading.
Produced by the Safer Chorley and South Ribble Partnership, an umbrella body for police, local councils and neighbourhood watch groups, they have already been distributed in Penwortham, a middle class suburb of Preston and there are plans to hand them out more widely.
It represents an extension of a tactic widely used at Halloween to deter unwanted trick-or-treaters. A similar message on the reverse of the cards warns unwanted trick-or-treaters not to call.
Some church leaders said that the suggestion that people are now afraid of carol singers represented an alarming reflection on modern Britain.
"It is a terrible state of affairs that people are terrified of answering their doors, so this is what they have to do," Father Timothy Lipscomb, the Vicar of Preston, the parish priest for the city's Minster, said.