Former World Champion boxer Scott Harrison, who refused to give a breath test after smacking his car into a kerb, was fined £490.
The 45-year-old had a quarter-full bottle of Buckfast in the passenger seat when police stopped him on January 16 2022. Harrison then claimed he was not driving the Hyundai i30 motor near his home in Cambuslang, Lanarkshire.
A trial heard officers had to smash a window to force open the vehicle to get the ex-fighter out.
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Harrison was found guilty at Glasgow Sheriff Court to two charges of failing to provide a breath test. He had earlier pled guilty to obstructing or hindering police in the execution of their duty.
He was acquitted mid-trial of careless driving.
In sentencing the ex-WBO Featherweight belt holder, Sheriff Matthew Jackson KC said: "I found both police officers who gave evidence credible and reliable.
"They were competent in carrying out the road side procedure as well as the intoximeter procedure. Mr Harrison did understand what was needed of him and I find him guilty.
"I found him reluctant to engage in the process."
Harrison was also disqualified from driving for 15 months.
PC Steven Fox told an earlier hearing how he had been tasked to keep a lookout for Harrison's green Hyundai.
Prosecutor Ross Canning asked the officer if anything came to his attention.
He replied: "The vehicle attempted to park adjacent to the block of flats. The vehicle bumped on the grass verge and pavement before coming to a halt."
PC Fox stated he told Harrison to exit the car but he did not. Mr Canning asked the officer to describe Harrison.
He replied: "Under the influence of alcohol and I could smell it from his breath. He was unable to speak, focus or listen to instruction."
PC Fox added that Harrison "refused to engage" with him and rolled up his window.
The officer said that he read the breath test procedure through the window and Harrison allegedly did not comply.
Mr Canning asked PC Fox: "Did you make observations of the vehicle?"
PC Fox replied: "In the front passenger seat of the vehicle we saw a bottle of Buckfast which was a quarter full."
PC Fox told the court that he made traffic officers aware of the situation.
The witness said: "He did turn off the vehicle and slipped to the passenger seat before they arrived. He then said he was not driving."
The officer claimed Harrison's window was smashed to force entry before he was arrested. PC Fox stated he took Harrison to Cathcart police office where a further attempt was made for a breath specimen.
The officer said Harrison did "try" and "puff" on the breathalyser but a reading could not be processed.
He added: "In my opinion he could have continued if he wished but was refusing to do so...we allowed him five or six attempts at it."
The hearing was told that Harrison was then charged with refusing to provide a breath specimen and he replied: "I did my best, no bother."
PC Stuart Sommerville told the court today that he believed Harrison was "at it."
Ross Yuill, defending, stated after the verdict that the dad-of-five is carer for his father who suffers from Alzheimer's.
The lawyer added: "He has had difficulties caring for his father at the time this happened and it became more and more stressful for him.
"There were more caring responsibilities for him in continuing the good work his father did [volunteering at a boxing gym in Glasgow's east end]."
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