Burglars smashed via a wall to get into George Attenborough and Son Jewellers, in Fleet Street, over the weekend, as The Sun first mentioned.
A CCTV camera in bookmakers next door changed into discovered to had been daubed with white paint.
The Met stated the excessive price of gadgets stolen warranted a “thorough and decided research.”
Det Supt Simon Moring stated: “This becomes an audacious burglary, and there are elements which appear to were planned with some precision by using the suspects.”
Former Met detective Peter Kirkham said: “Although this is not one of these things wherein most powerful multiple gangs will be capable of pulling it off, it’d be above the average newbie burglar, a few notions have gone into it.
“There’s probably a few kinds of alarm system they’ve needed to deal with, so there was a diploma of difficulty.”
However, Det Supt Moring stated the break-in turned into “nowhere close to” as state-of-the-art as more “excessive-profile” burglaries handled using the Flying Squad, inclusive of the Hatton Garden heist.
Only approximately £4.5m of the £thirteen.6m of assets stolen has been recovered after that raid in the course of the Easter weekend in April 2015.