The Home Office issues two lists of documents – list A and list B – that employers can accept as an individual’s right to work proof in the UK. No other documents are acceptable when doing this work check.  When doing a document check only accept the required information as an original document and not a copy.
List A states acceptable documents for a person with a permanent right to work.
List B states acceptable documents for a person with a temporary right to work.
Doing a check on a person with a temporary right to work establishes a time-limited statutory excuse, which means you’ll need to conduct a re-check in order to retain the statutory excuse. This is most often when the person’s permission to be in the UK finishes. This expiry date will be indicated on the document used to conduct the check.