A store manager at David Mellor Jewellers in Andover prevented a jewellery raid by chasing off two intruders attempting to smash their way through its glass shop-front.
Two offenders approached the store on a black scooter, and tried to smash the glass exterior with lump hammers and a knife.
They were unable to break the glass and were chased off by the manager.
It is believed the offenders then travelled to the London area. Nothing was taken from the store.
Detectives have released a CCTV image of two people they would like to speak to about the attempted robbery.
Both wore dark clothing, while one wore a dark-coloured motorcycle helmet and the other a white helmet.
Detective Constable Jonathan Swift, of Northern CID, said: “This was a brazen daylight robbery attempt. We would like to hear from anyone who saw the two figures in the CCTV image travelling to or from the scene.
“We would also like to hear from anyone who witnessed what happened or anyone who has any knowledge of the offence.”
As well as Andover, David Mellor Jewellers operates stores in Totton and Eastleigh.