Despite these closures, Sir Sadiq made a manifesto pledge to maintain a 24-hour police front counter in every London borough.
In 2023, he intervened to keep one such service in west London open, shortly before a parliamentary by-election in the constituency.
But this week he told Assembly Members: “When the facts change, I change my mind.
“Very few people use front counters – it’s just a fact.”
Sir Sadiq – who oversees the work of the Met Police Commissioner – said he had been told the plans would save the force £7m.
“I made a pragmatic decision to listen to the advice of the police and pivot that funding to an improved Command and Control Centre.
A Met Police spokesperson said only 5% of crimes were reported using front counters last year, with only 1% of these being made during the night.
The force added that the £7m saving would allow it to “focus resources relentlessly on tackling crime and putting more officers into neighbourhoods across London”.
However, Assembly Members said people visited counters for other reasons, such as reporting missing people, seeking guidance or using them as a place of safety.