Police are appealing for information about an armed gang suspected to have been involved in five linked bank robberies in London.
The most recent took place last May in a Nationwide branch in Walthamstow’s High Street.
The two suspects, who were dressed in dark clothing and motorcycle crash helmets, threatened two security guards who were refilling a cash machine.
One of the guards was shot in the leg at close range three times by one of the gang.
It left him requiring hospital treatment for a week and with a “severe psychological impact”.
Scotland Yard say all the offences occurred between May and August 2016 and three of the other four involved the use of a gun.
The first involved suspects robbing Cyprofood, a 24-hour cash and carry in Tottenham.
Crimestoppers is offering a reward of £5,000 for information that leads to the arrest and conviction of those responsible for the armed robberies.
Detective Chief Inspector Nick Blackburn, of the Met’s Flying Squad, said: “An increasing amount of violence is being used during these offences and we need the public’s help to identify the suspects, their firearms and the stolen cars they escaped in.
“In the latest offence, a guard was shot a number of times at close range. Fortunately, he has recovered from his physical injuries but has suffered a severe psychological impact from the incident.
“Any piece of information, no matter how small, could be what we need to identify the men responsible for these crimes.”
The public are asked to call Crimestoppers anonymously on 0800 555 111 or via an anonymous online form at crimestoppers-uk.org.