A Devon man has broken the national speed limit travelling on a jet-propelled shopping trolley.

Matt McKeown, 52, from Plymouth, reached an average 70.4mph - smashing his previous record of 45mph - at Elvington airfield, near York.

He said he was submitting the evidence for Guinness World Records to ratify.

The shopping trolley was powered by a modified Chinook helicopter starter engine and a 250cc Honda engine. It is stabilised with go-kart wheels.

Following his previous record breaking attempt last month, Mr McKeown vowed to go faster and was invited to the Elvington World Wheelie Records Straightliners event.

“It was the first time I’ve actually been scared driving that thing,” he said.

“I was quite nervous going out, but when I realised how close I was to getting over 70mph as an average, I thought I’d have to push the boat out a bit and take a bit more of a risk and it paid off.”