Rebecca Meakin was found guilty last month
A woman who ran a car clamping firm which took thousands of pounds from drivers has been jailed for four years.
Rebecca Meakin, of Millers Vale, Heath Hayes, Staffordshire, was convicted of blackmail by charging motorists up to £300 to retrieve their vehicles.
Her company, Rowencroft Immobilisers, worked at car parks in Cannock and Worcester, Stafford Crown Court heard.
Judge Simon Tonking said regulation of the UK clamping industry was "far from rigorous".
He said: "The boundaries between what is lawful and unlawful are unclear.
"It is a most unsatisfactory state of affairs."
Her co-defendant Cameron Khan was jailed for four-and-a-half years for a number of charges, including conspiracy to blackmail.