Advances in “CCTV enhancement technology” have allowed detectives to return to 27-year-old footage of Putney Bridge Underground station, Scotland Yard said.

The former Crimewatch presenter was shot and killed aged 37 outside her home in Fulham, west London, on April 26 1999.

Jill Dando was killed on her own doorstep in April 1999 (BBC/PA)

PA Media

An unidentified person dubbed “Man X” was captured on camera near Putney Bridge station, about a mile from Ms Dando’s home, shortly after the attack.

A driver had seen a man “running for his life” on Fulham Palace Road at around the time of the shooting, the Mirror reported.

She later picked out Man X in the station CCTV as the person who had been sprinting.

A Met spokesperson said: “In the 27 years since Jill Dando’s murder, the investigation has been subject to numerous reviews, aiming to identify whether matters could be progressed with advances in technology and forensics.

“Recent advancements in CCTV enhancement technology have provided investigators with the opportunity to re-examine original footage from Putney Bridge train station.

“The review of CCTV footage forms part of ongoing inquiries and should not be interpreted as a significant line of inquiry nor as a new investigation being opened on this matter.”

Outside of her work on Crimewatch, Dando was also seen during the 1980s and 1990s on BBC shows including travel show Holiday and The Antiques Inspectors.

She began as a reporter at her local paper The Weston Mercury in Weston-Super-Mare, Somerset, before moving to the morning programme Breakfast Time, which later became BBC Breakfast.