Sixt Rent a Car Limited, of Langley Quay in Slough, were found guilty of failing to give information relating to the identification of the driver of the vehicle on January 11 last year.
The incident happened in East Yorkshire and they were found guilty at Humber Magistrates Court on March 16.
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The company has been fined £660 as well as a £66 victim surcharge and £110 in court costs. The total fine is £836 to be paid by next month.