A cycling lobby group says it is shocked that no charges will be laid over an incident in Brisbane's CBD last year that left a cyclist with a broken ankle.

Key points: Cyclist James Stevenson reported the incident to police, but has been advised this week no-one would be charged

Cyclist James Stevenson reported the incident to police, but has been advised this week no-one would be charged ABC News has not been able to contact the man in the video for comment

ABC News has not been able to contact the man in the video for comment Bicycle Queensland says Australia's attitude towards sharing the road needs to change and police needed to take these matters more seriously

James Stevenson was riding to work in October 2018 when he brushed past a man walking on the footpath.

Bike-mounted cameras captured the pedestrian turning around and chasing Mr Stevenson back up the street.

Mr Stevenson said he was punched twice and fell to the ground, breaking his ankle, which was caught in the cleats of his bike.

Mr Stevenson reported the incident to Queensland police, but was advised this week that they would not be charging anyone.

"They said the video evidence was not conclusive that he assaulted me," Mr Stevenson said.

"It's absolutely ridiculous — people can't go around acting like that — I hope they'll [police] reconsider their position."

Bicycle Queensland chief executive officer Anne Savage said she was shocked by the decision.

"We certainly would have liked to see this incident considered by a court," Ms Savage said.

"We will certainly be seeking to have the decision reviewed — I will speak to the officer in charge at the station.

"I will also write to the Police Minister conveying our extremely serious concerns at the way this has been handled.

"We cannot remain silent on these types of incidents."

Mr Stevenson said he had recovered from his injury, but does not ride as much as he used to. ( ABC News: Mark Slade )

'Evidence available did not reach that threshold': Police

In a statement, the Queensland Police Service (QPS) said it had investigated the complaint, interviewing both parties and viewing relevant footage.

"In order to commence a proceeding in a criminal jurisdiction it is necessary for police to consider if there is sufficient evidence for each and every element of the alleged offence," the statement said.

"In this instance the evidence available did not reach that threshold.

"Both parties have been advised of the outcome."

ABC News has not been able to contact the man in the video for comment.

'Trying to get over it'

Mr Stevenson said he had recovered from his injury, but does not ride as much as he used to.

"Definitely more cautious about riding, definitely more cautious about commuting to work," he said.

"I'm trying to get over it, push through, but it hasn't been a nice experience.

"I still suffer pain in my ankle every day, but I'm mobile again, which is something."

Mr Stevenson used cameras made by Australian company Cycliq.

Mr Stevenson and Ms Savage stand in the Brisbane laneway on Tuesday. ( ABC News: Melinda Howells )

Footage does not always get police action

Cycliq marketing manager Ben Hammond said the cameras provided peace of mind for cyclists, but the footage did not always prompt action from the police.

"There are a lot of cases where cyclists bring footage to police and they sometimes get that reaction," Mr Hammond said.

"What we do find though is the more regularly that cyclists are bringing that bike camera footage to police, the more likely that police start to take notice and progress with those charges or investigate further."

Ms Savage said Australia's attitude towards sharing the road needed to change, and police needed to take these matters more seriously.

"I hope never to see anything like this happen again and we certainly expected to see much stronger action," she said.