It's according to new analysis by the Motor Insurer's Bureau.
The figures, released as part of the Bureau's campaign Operation Drive Insured, reveals that HP18 ranks 6th nationally for uninsured driving.
The Motor Insurer's Bureau analysis, based on two years of MIB claim data and ranked by defendants per 1,000 population, shows HU2 in Hull is ranked first overall, followed by RM20 in Thurrock, BT46 in Mid Ulster, B16 in Birmingham and BT43 in Mid and East Antrim.
Also in the Thames Valley region and the top 15 national hotspots list was SL2 In Slough.
The Operation Drive Insured campaign, which launched today and runs until November 15th, is the Bureau's nationwide initiative involving every UK police force in a coordinated effort to identify uninsured vehicles, disrupt offending and help drivers avoid common insurance mistakes that could leave them unknowingly uninsured.
The Bureau say they're already working closely with Thames Valley Police via initiatives such as Operation Scalis, which sees the MIB give funding that enables forces to dedicate time to tackling uninsured driving within their local hotspot areas. Almost 3,700 uninsured vehicles have been seized by Thames Valley Police so far this year.
Among the top 5 regional postal hotspots for uninsured driving are HP18 in Bucks, SL2 in Slough, MK3 in Milton Keynes, HP11 in Bucks, and RG30 in Reading.
You can find out more about the campaign and common insurance mistakes here (external).
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