Edwards said: “I’d swap all this to have Elle back here – if it hadn’t have happened, none of this would have happened, so it’s a bittersweet pill.
“But lots of people have reached out because of the film.”
May was on his own walk from Land’s End to John O’Groats to raise awareness about gun and knife crime when Edwards contacted him, and they began to share their journey trekking thousands of miles across the UK.
The film captures their blossoming friendship and the challenges they face along the way.
“When I look back in that timeframe, it happened so quick, literally within days of Elle passing away,” Edwards said.
May had set off on his journey after her funeral, before Edwards joined him in Worcester.
Later, here were “1,000 people walking behind us” through Liverpool to the Pier Head as part of the walk, and the wider campaign against gun and knife crime.
“And we’re now in Beverley Hills, the journey just keeps going,” he said.