Police investigating an armed robbery in which a man was pistol-whipped outside a Co-Op store have released CCTV images in a bid to find witnesses.

A masked robber attacked a cash delivery worker and stole his cash box containing about £45,000 in Tattenham Corner, Epsom, on January 30.

The robber, who was a passenger in a cream Chevrolet, jumped out and hit the man in the face with a handgun, which has still not been found, while he was making a routine stop at the store in Tattenham Cresent at 10.30am.

Police have now released images of the car believed to have been used by the robber which was abandoned on North View Crescent.

Images also show a cash box similar to the one stolen and people seen near the scene who police believe could hold vital information about what happened.

A man in his 40s from Battersea and a man in his 20s from Southwark were arrested on suspicion of robbery in the days following the incident and remain on police bail until March.

Items seized during searches of properties in Box Hill in Mole Valley and Wandsworth in London are undergoing analysis.

Deputy senior investigating officer Detective Sergeant Oana King said: "I need local residents and workers to ask themselves a few simple questions including, do you shop regularly at this store?

"Were you there on the morning of Wednesday, 30 January?

"Or had you seen anything suspicious in this area in the days leading up to the robbery?

"If the answer is yes, please contact us." "I would also appeal to anyone who saw the offenders park the car on North View Crescent to get in touch as your information, no matter how small or irrelevant you feel it is, could be vital to our investigation."

Neighbourhood Sergeant Karen Coyne said: "Local officers have been using their specialist knowledge of the area to assist detectives with their investigation and anyone who would like to discuss this incident with them is urged to make contact."

Timeline:

Approx 10.15am - A rare cream coloured Chevrolet Captiva with its headlights on is seen circling the shops on Tattenham Crescent three times.

10.20am - The cash delivery van pulls up to make a delivery and parks opposite the Co-op store.

10.23am - The Chevrolet enters the car parking area and reverse parks into a bay towards the end of the parade of shops alongside the Co-op and behind a silver vehicle.

10.29am - A passenger jumps out and attacks the cash delivery officer while the Chevrolet remains stationary with its brake lights on.

10.30am - The driver and passenger on board the Chevrolet leaves the scene and are believed to have gone along Shawley Way, turned left into Garlichill Road and then right into North View Crescent.

11.35am - Officers find the Chevrolet abandoned at the junction of Garlichill Road and North View Crescent.

For more updates on the investigation follow #OpJadeite on Twitter.

Anyone with information should call Surrey Police on 101 quoting or Operation Jadeite or reference number RB/13/784 .

Alternatively call Crimestoppers anonymously on 0800 555 111.