Yes. You must always inform the applicant and obtain their permission before you request an Adverse Credit Check.
Consent requirements
You can request an Adverse Credit Check on any prospective employee, but only with their consent.
You must tell the applicant that you intend to carry out the check.
You should explain:
What the check is
Why you are doing it
How you will use the results
How consent works in the uCheck system
The uCheck system requests consent from the applicant before it processes an Adverse Credit Check.
Because of this, it is important that you discuss the check with the applicant in advance, so they know what to expect and can give informed consent.