Detective Chief Inspector Simon Taylor, who led the hunt for the violin, said:
"We're absolutely delighted to have recovered the Stradivarius violin after a long and very complex investigation.
"Though it took some time to successfully locate and recover the violin, we were confident it had remained in the UK.
"I always maintained that its rarity and distinctiveness would make any attempt to sell it extremely difficult, if not futile, because established arts and antiques dealers would easily recognise it as stolen property."
More top news
A South east London man was charged under modern slavery laws with keeping a person in servitude and arranging the travel of another person.
Police have launched a hunt for conmen who duped couple in their eighties out of £20,000 in life savings by posing as gasmen.
A Met Police Sergeant attached to Croydon borough has been dismissed for failing to respond to fatal attack where man was stabbed 200 times.