A retired British businessman who became a real-life Walter White leading a double life selling meth was killed this week after a high-speed police chase.

David Sewell, 60, (David John Sewell) moved to Udon Thani, Thailand, several years ago where he began dealing drugs to other bored expats and pensioners.

During the day he appeared to live a normal life - visiting Buddhist temples, handing out food to the region's poor, and looking after the family's pet bulldog.

While the trader's Thai wife, Maen, 47, with whom he had one daughter, said she thought he was out drinking with pals when he disappeared each night in his unassuming grey Honda Civic.

But local cops became suspicious when they saw David acting strangely while parked up on a roadside on Thursday evening with the door open.

They walked over to speak to him but he panicked - with a large bag of cannabis, 80 methamphetamine pills, five bags of crystal meth and seven bags of cocaine on the front passenger seat.

Several police cars gave chase at speed for more than 10km before David ploughed into the back of an 18-wheel truck on a motorway at 9pm. He was rushed to hospital but was later pronounced dead.

Officers said the drugs were stashed inside empty smartphone boxes. They believe that David, who ran an importing and exporting business, had been regularly selling them to other elderly expats who had retired to the sleepy rural region with their Thai wives.

Police Lieutenant Colonel Pattanawong Janpon, deputy chief of Udon Thani Provincial Police Station, said: ''We saw a car

A retired British businessman who became a real-life Walter White leading a double life selling METH was killed after a high-speed police chase.

David Sewell, 60, (David John Sewell) moved to Udon Thani, Thailand, several years ago where he began dealing drugs to other bored expats and pensioners - mimicking the hit TV show Breaking Bad.

During the day he appeared to live a normal life - visiting Buddhist temples, handing out food to the region's poor, and looking after the family's pet bulldog.

While the trader's Thai wife, Maen, 47, with whom he had one daughter, said she thought he was out drinking with pals when he disappeared each night in his unassuming grey Honda Civic.

But local cops became suspicious when they saw David acting strangely while parked up on a roadside on Thursday evening with the door open.

They walked over to speak with him but he panicked - with a large bag of cannabis, 80 methamphetamine pills, five bags of crystal meth and seven bags of cocaine on the front passenger seat.

Several police cars gave chase at speed for more than 10km before David ploughed into the back of an 18-wheel truck on a motorway at 9pm. He was rushed to hospital but was later pronounced dead.

Officers said the drugs were stashed inside empty smartphone boxes. They believe that David, who ran an importing and exporting business, had been regularly selling them to other elderly expats who had retired to the sleepy rural region with their Thai wives.

Police Lieutenant Colonel Pattanawong Janpon, deputy chief of Udon Thani Provincial Police Station, said: ''We saw a car