Hi. This is from the NRLA website, about the credit checks (which are undertaken by an NRLA partner):
Instant credit checking – results available within minutes.
Check applicant’s previous address history.
Discover County Court Judgements (CCJ’s) from court records.
Detect bad credit history such as bankruptcy, IVA’s etc.
Verify electoral role registration.
Check for aliases.
Credit scoring giving the likelihood of applicant falling into arrears.
‘Pay as you go’ service – no account application or bulk buying required.