Police hope new CCTV images will help them identify a suspected thief who stole a diamond ring worth more than £3,000.
The dramatic raid took place on market day in Stamford on March 21.
The man pictured is thought to have stolen a diamond ring worth £3,250 from F Hinds in High Street just after 2.45pm.
The thief ran out of the shop and towards Stamford Walk in full view of shoppers visiting Stamford’s weekly farmers’ market.
As he made his escape he was hit by a car in St Mary’s Street, but despite “considerable impact” he got up and carried on running. He was last seen sprinting towards the Meadows in the direction of the railway station.
The Mercury carried blurred CCTV pictures of the suspect two weeks ago. But after scanning further footage police have this week release much clearer pictures. Officers hope someone will recognise the man and identify him.
Sector inspector for Stamford and Bourne Mike Burnett said: “These are much sharper images of the suspect.
“While we do have several leads, we hope the new pictures will jog someone’s memory and help us get the name of the suspect.”
Officers do not believe the thief is from the Stamford area and may have come across the county border.
The man was in his early to mid-40s, white, with a hairy chest and black hair heavily slicked back. His yellow V-neck T-shirt had a distinctive print. He smelled strongly of aftershave and had a southern accent.
If you saw the man or can identify him, call 101 and ask for Sgt 600 Rachel Blackwell or PC 1169 Steve Robinson at Stamford police station.