Image caption, Tony Howells said although it is not a cure, it is “delaying Parkinson’s taking over your body” and giving hope A hospital in Bristol is believed to be the first in the world to implant the smallest device into a brain to reverse the symptoms of Parkinson’s .

Tony Howells, the first person to receive the treatment as part of a trial, said the impact was “amazing”.

Twenty-five patients have been selected for the trial that concludes next year.

Mr Howells, who had the operation in 2019, said: “Before the operation I went for a walk on Boxing Day with my wife and I got 200 yards (182m) from the actual car.

“I had to turn around and go back because I just couldn’t walk.”

“Then after the operation, which was 12 months later, I went on Boxing Day again and we went for 2.5 miles (4km) and we could’ve went further.

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