Police had to deal with more than 4.5million calls last year, in figures revealed by the Met today.
A total of 4,576,521 calls were answered by the Met's team of call operators, with 1,767,414 of them being 999 emergency calls.
A total of 482,255 were designated as 'I' grade, requiring an immediate emergency response.
Christmas Day saw 5,868 calls to the force, and on New Year's Eve they dealt with 12,913.
The busiest day of the year was Halloween, on October 31, with 18,417 calls.
Chief Superintendent Pippa Mills, in charge of the Met's call operating centre, said: "It has been another very busy year for our call operators, not least Halloween which saw us answer an average of 767 calls coming in across London every hour.
"These figures demonstrate how incredibly hard our call operators work and I am proud of the professionalism they show, particularly when dealing with distressed members of the public who urgently need our help."