In the early days of the 1930s, just 24 staff in the old Victoria Embankment headquarters of the Metropolitan Police dealt with a couple of hundred calls a day.
It was launched after a major fire in London in 1935 resulted in five fatalities. A committee was set up to look at how telephone operators could identify emergency calls.
Now, there are three centralised communication complexes in Bow, Hendon and Lambeth, employing over 2,000 people dealing with 13,000 to 20,000 calls per day.
"The level of accessibility that it provides allows emergency services to save lives and protect the public.
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"Our dedicated staff operate 24 hours a day, 365 days a year ensuring that police can be dispatched quickly to incidents where the public need us," he said.
Being there 24/7 and ensuring that officers are dispatched quickly to emergency and priority incidents is a critical function for the police, Jackson said.
In 1937, the first ever emergency number system anywhere in the world came into being in London with the introduction of the 999 call -- marking an unprecedented change in the way the public communicated with the Metropolitan Police.
In July last year, Met CC launched its live twitter feed @MetCC from one of the three central communications complexes where first contact operators were answering tens of thousands of emergency calls every week.
@MetCC has had more than 350,800 posts submitted since its launch, 7,600 of which required a response from police.
As part of events to mark the anniversary of the 999 number, a special commemorative section has been set up on the Met's Facebook page featuring video interviews with 999 operators, a wide range of photos, illustrations and facts and figures relating to the history of the service.
The feed will include photos relating to emergency communication that chart the significant developments in the service between 1937, when a handful of officers used counters on large table maps to denote police cars and messages were transmitted by Morse code, and the present day's sophisticated high-tech command centres.
The Met Police said it has always made use of new technology to help them fight crime - the first case of a criminal being arrested through use of telegrams was recorded in 1845, while in 1910 the notorious murderer Dr Crippen was famously caught after telegrams between London, Canada and a ship in the Atlantic were sent.
The Met wanted all calls routed to the Information Room because local police stations often only had a single line which would be engaged when an emergency call was being made.
The public could ring the operator and ask for the Scotland Yard switchboard - the 'Whitehall 1212' number famous from many old films - and then be connected straight through to the IR.
But the impetus for a new, dedicated emergency number came from a tragic event in 1935 when five women lost their lives in a fire at a Wimpole Street doctor's house in London.
Neighbours dialling 0 to alert the operator to the blaze found it jammed - at that time the automatic exchanges had no way to distinguish between "life or death" calls and all the others coming into their switchboards - highlighting the need for urgent reform of the system.
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