The Association of British Insurers (AIB) has estimated that motorists could save £15 on their premiums thanks to the data being put online.
The savings would not be felt by motorists who had lied about their driving record.
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Government ministers from the UK, France and China attended the event.
Tonight investigates the increasingly sophisticated methods criminals are using to target the elderly and defraud them of their savings.
If you've been anywhere near Trafalgar Square today you'll notice something different.