A ‘BAD boy’ dog lover who was flown to Australia to take part in a BBC programme had been selling heroin on the streets just weeks earlier.

Mishak Guichard-Foster was himself addicted to the drug when he was taken Down Under for an episode of BBC3 show Don’t Blame The Dog.

But just weeks earlier the 23-year-old, who the BBC website styles “bad boy Mishak”, was peddling heroin to an undercover police officer.

He was on bail awaiting trial in April this year when the episode, showing him in Melbourne, was aired.

Guichard-Foster, who has a history of drug crime, pleaded guilty to supplying heroin and has now been jailed for three years.

In March last year he was going by the name of Ash and selling heroin on the streets of Swindon.

The dealer handed out business cards with his name and mobile number on to allow drug users to call him and place their orders.

He would then arrive on a push bike and cycle up to groups of junkies who had been told to meet him in parks and streets to buy their next fix.

One occasion, an undercover police officer counted more than 10 other people queuing to buy heroin from him.

Claire Marlow, prosecuting, told Swindon Crown Court police launched a covert operation into drug dealers in the town last year.

On Wednesday, March 2, an officer, using the name Jade, was introduced to the dealer after meeting users outside the library.

She was handed a business card by him and the following day phoned the number on it and arranged to meet him late that afternoon.

When she got there about five others were also waiting and he cycled up, spat the drugs from his mouth, and sold her two £10 wraps.

Forensic tests showed his DNA was on the wrapping and she also noticed his distinctive tattoos.

She then met him on three consecutive days, twice in Queens Park and once behind a chip shop in York Road and where she again joined others to buy drugs.

A few days later, after he had been arrested and his phone seized, she received a text message giving her a new number to call to arrange to buy from him.

Guichard-Foster, of Wembley, north London, pleaded guilty to four counts of supplying class A drugs.

The court heard he was convicted of producing cannabis in 2009 and possessing the drug the following year.

Amelia Fosuhene, defending, said he went to Australia at the end of March and beginning of April last year adding “at that time he was still using slightly”.

She said when he got back he decided to sort his life out, getting off heroin, before he was arrested for the dealing in June.

At the time of the offence she said he was a user and doing the bidding of others to get drugs for himself.

Jailing him, Recorder Nicholas Rowland said: “You yourself know the misery it brings with it. Supplying, albeit to those already taking it, you were spreading the misery around.”