5.2.1 Procurers should not normally need to interview more than three or four sets of each type of potential adviser. To make a choice, they should review the responses, take up references, follow up outstanding material issues and shortlist for interview in line with departmental procurement procedures. As indicated in paragraph 4.5.7 above, procurers are encouraged to complete the standard reference form at Annex C at the end of projects to record an appraisal of the quality of advice received on PFI work. Forms can then be made available to other procurers seeking to follow up references at award stage.