Gathering supporting information is a cumulative process over the five-year revalidation cycle, and not one that should be left until the last minute. Appraisers will want assurance at each appraisal that you are developing an appropriate portfolio for revalidation. If there are circumstances that will affect the collection of supporting information (e.g. prolonged sick leave, maternity leave or work abroad), you should speak to your appraiser and Responsible Officer at the earliest opportunity.