A freedom of information request submitted by the Law Society Gazette found the MoJ’s Claims Management Regulation department cancelled the authorisation of 734 claims firms in the year to the end of March.
The closures brought down the total number of authorised claims firms to 3,018.
The MoJ has set up a dedicated team to deal with poor practices by rogue claims firms who solicit claims for missold payment protection insurance.
The number of MoJ staff that have been allocated to regulating claims firms has risen from 32 in 2007, when the MoJ took over claims management regulation, to 57 currently.
The MoJ launched an investigation last month into claims management companies after a wave of invalid compensation claims on behalf of customers allegedly missold PPI.