Breaking News Emails

Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.
 / Updated 
By Corky Siemaszko

Call them the over the hill gang.

The last three members of a British criminal crew with a combined age of around 500 were found guilty Thursday of pulling-off a $20 million heist — the biggest burglary in the country's history.

William Lincoln, 60, and Carl Wood, 58, were convicted of burglary. Hugh Doyle, 48, was convicted of fencing stolen goods from the Hatton Garden Safety Deposit Robbery.

From left to right, Hugh Doyle, who was found guilty of concealing, converting or transferring criminal property on January 14, 2016 in connection with the burglary; William Lincoln and Carl Wood, who were convicted of conspiracy to commit burglary, and conspiracy to conceal, convert or transfer criminal property.MPS / via AFP - Getty Images

But they're young bucks compared to the 76-year-old "guvnor" of the caper, Brian Reader, who reportedly used his senior citizen pass to pay for the bus ride to the job in London's diamond district.

Reader and the three other ringleaders of the daring robbery had already pleaded guilty.

"It was an audacious, brazen burglary that was some three years in the planning," Detective Superintendent Craig Turner of the London Police said. "So far we have successfully recovered stolen property restoring just over £3.7 million ($5.3 million) worth of gold and jewelry."

All seven will be sentenced in March. Police are still looking for an eighth alleged robber, a mysterious red-haired man who they identified as "Basil."

Reader is the oldest of the crooks and has a long criminal record. Police said he planned the break-in with three other retirees — John Collins, 75, Terry Perkins, 67, and Daniel Jones, 58.

Posing as gas workers in hard hats and reflective vests, the gang struck last Easter weekend while most of the diamond merchants were away.

In court testimony, it was revealed that they got inside the building housing the Hatton Garden Safe Deposit Company via a fire escape and used an elevator shaft to reach the basement and safe. Using metal cutters and drills, they spent four days boring through a 20 inch concrete wall to reach the gold and jewels.

Police were able to identify some of the culprits using surveillance tapes, Then they bugged the Castle Pub in the Islington neighborhood and listened in as the thieves discussed dividing the loot.

Items of jewellery recovered during the investigation into the burglary at the safe deposit center in Hatton Garden, London. An estimated £14 million worth of jewellery and valuables were stolen between April 2 and April 5, 2015 in the raid.MPS / via AFP - Getty Images