A couple escaped unscathed from a house in Balsham after a fire which burned a hole in the first floor bedroom.
Firefighters from Linton, Cambridge and Haverhill were called to the semi-detached house in Old House Road, at 7.21am on Friday, January 16.
Wearing breathing apparatus they put it out by 8.56am, used fans to clear smoke from the property and checked for hotspots.
A fire investigation found the cause of the fire to be accidental.
Station Commander Pete Jones said: “The fire had started in the loft bedroom of this property, which was unoccupied and it is believed it was burning for a few hours before the residents called 999.
“The top floor of the property is quite badly smoke damaged and the fire has burned a hole into the first floor bedroom.”
None of the three smoke alarms in the house were working, leading Mr Jones to say: “Luckily, these residents did get out of their house alive and well, but we would like to take this opportunity to remind people to make sure you have a working smoke alarm on each floor of your home and to test it regularly.
“Never take the batteries out and always replace it every 10 years.
“If you have elderly or vulnerable relatives, neighbours or know of people in your community who may not be able to test their own smoke alarm, then please do it for them.”
“Alternatively, call our Freephone number to see if they are eligible for a free home fire safety check.”
The find out if you or a vulnerable person you know is eligible for a home fire safety check, call 0800 9179994.