This article was reproduced with the kind permission
of the British Broadcasting Corporation
27 November 2007, 11:59 GMT
Crews tackling the blaze at Dobbs Weir near Waltham Abbey said flames had spread to 20% of the unit.
Because of fears the mobile home contained gas cylinders, crews from Waltham Abbey, Hoddesdon and Harlow tackled flames from the outside.
Firefighters confirmed one person had died and a full investigation into the cause of the fire would be carried out.
The fire was extinguished within 40 minutes.
Divisional officer Ray Skinner said: "We are becoming increasingly concerned about the safety of people living in caravans.
"Essex County Fire & Rescue Service provides free safety checks for all homes including caravans.
"Crew will visit residents and even install smoke alarms entirely free of charge."