He now relies on guide dog Kika to get him around the once familiar streets of London.
But the footage captured by his canine guide hasn’t always shown a city willing to help him.
“The video came out of necessity,” Patel says. “Kika was getting hit by peoples’ bags and she was getting a lot of abuse. A woman stopped me one day and had a go at me for holding everyone up and said I should apologise, which was a real shock.”
The former doctor found a solution – attach a GoPro to Kika’s harness and film every journey. Patel’s wife, Seema, can then review the footage if it is felt there was something amiss about that day.
And when alterations were made to a London train station the camera came into its own.
“I asked for help and no one came,” Patel recounts. “The video shows lots of staff standing around me and this one guy looking over many times.
“Eventually when the staff member actually came to me the first thing he said was ‘sorry I didn’t see you’ and that really bugged me. He wouldn’t say that to someone who wasn’t visually impaired.
“It really makes me angry. It’s the fact that someone is fobbing me off.”
The footage was sent to Network Rail giving Patel the “valuable evidence” needed to lodge a formal complaint about an incident he couldn’t see.
“It made me feel vulnerable but having the footage was a godsend,” he says.
“Having the camera, having the voice, having the actual scenario played out in real time it actually gives me something to go back to the company and say ‘this is what happened to me and it needs to be sorted’.”