Dame Sarah Storey, Great Britain’s most-decorated Paralympian, has retired from international competition with immediate effect.

The 48-year-old cyclist has opted not to compete at Los Angeles 2028 to focus on helping improve Para-sport.

The 19-time Paralympic champion feels the sport has “stalled somewhat” since the London 2012 Games and that many areas “still need attention”.

“The years between each Games haven’t been utilised well enough to create the momentum that I and others hoped to see,” she said.

“I see this as a critical stage; there are many areas of Para-sport that still need attention, and that is something that has played a big part in my decision.

“I fully believe that I can have a greater impact off my bike, rather than chasing a 10th Games and possibly further titles.

“I’m excited to be part of a future where we inject the momentum that is needed to ensure the future is bright for all Para-athletes.”

Storey started her career as a swimmer and competed at four Games before switching to cycling, winning a total of 30 Paralympic medals across nine Games, including four golds at London 2012.

World Athletics president Lord Coe, who was chairman of London’s organising committee for the Olympic and Paralympic Games, said: “Para-sport was an enormously significant part of London 2012 and I remain extremely proud of what we were able to deliver.

“However, the issues that Dame Sarah raises upon her retirement resonate with me hugely – sport must continue to take those small but steady steps forward to ensure that what has gone before is not wasted.”

The British Paralympic Association has been approached for comment.