Posted By Lee Daniels
You need to read the Approved Code of Practice and Guidance L117 Rider-operated lift truck: Operator training.

Paragraph 45 (which is in the guidance section) states

Authorisation, records and certificates
45 Following satisfactory completion of training, the employee should be given written authorisation to operate the type or types of truck for which all three elements of training have been successfully completed. Authorisations may be issued on an individual basis and/or recorded centrally by the employer. Authorisations should state the operators name, the date of
authorisation, the truck or trucks to which they relate and any special conditions, such as area limitations. Employers should not allow personnel to operate lift trucks on any premises without authorisation (except in the case of a trainee under close supervision). Employers will also need to ensure that they are satisfied with the continuing competence of authorised operators.