A SATELLITE tracking firm is warning fleets not to leave vehicles unattended on frosty mornings, with vehicle crime surging during winter months.

NavTrak had a fifth more call-outs during the 2002 winter, with drivers leaving vehicles to warm up on driveways, creating easy access for thieves.

Vehicle theft now costs the UK £3.4 billion every year according to the Home Office, with thieves using keys to steal the vehicle accounting for a major part of this.

Giles Harridge, managing director of NavTrak, said: 'Motorists are making it even easier for thieves when they leave keys in the vehicle's ignition.'

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