Malmesbury-based manufacturer Dyson is recalling one million heaters today over fears they could pose a fire risk.

The recall of the AM04 and AM05 models was announced on its website after "a small number" short circuited, causing a small internal fire.

The company stressed that other models are unaffected and no-one has been injured as a result of the fault.

In a message posted on its website, Dyson is urging customers to return the products for a free engineering fix.

"We're voluntarily recalling all AM04 and AM05 heaters due to a potential safety issue," the firm said.

"Out of a million heaters sold worldwide, we know of a small number that have short-circuited resulting in a small fire contained within the machine.

"There have been no instances of injury or property damage, but safety is our first priority.

"That's why we're recalling all machines and implementing an engineering fix in each one."

Earlier this month the company released a "near silent" update to its bladeless fan that it claims is quieter than a buzzing mosquito.

The company said the Air Multiplier fan is up to 75 per cent quieter than the original model, released in 2009, after a team of 65 Dyson engineers reduced the turbulence of high velocity air.

Dyson - which employs more than 3,600 staff worldwide - was founded in 1992 and now sells machines, including vacuum cleaners and hand dryers, in more than 50 markets.