Millions of homeowners are risking disaster this Christmas- with unswept chimneys, loose roof tiles and dodgy electrics creating health risks for millions

A nervous 30 per cent fear their lights could be a fire hazard, with a further 21 per cent not sure if their electrical wiring is up to safety standards.

And one in 10 (10 per cent) said their Christmas lights were at least eight years old.

Almost half (48 per cent) said they don’t know how often their chimney should be swept, with a third (32 per cent) admitting theirs had never been cleaned.