A new BBC report detailed how Detective Constable Thomas Grimshaw's visit to a budget hotel in January 2020 led to the police discovering.
Back in December 2019, Ecclestone -- a British model, socialite and heiress, who is the daughter of former Formula 1 racing boss Bernie Eccelstone.
That night, their Kensington Palace Gardens home -- which is located on what is called "billionaire's row.
While a security guard at the family's property saw three unmasked intruders, they ultimately escaped.
The Met's Flying Squad then began the investigation titled Operation Oakland -- however, they initially didn't have much evidence to go on.
But after CCTV footage showed the gang of thieves getting in a cab, detectives then contacted the around 1,000 cab drivers who were working.
One taxi driver remembered driving the burglars, which led investigators to a budget hotel called TLK Apartments in southeast London.