This is now formally known as the In-service Inspection & Testing of Electrical Equipment test.
Domestic Legionella Risk Assessments are a legal requirement for Landlords in the UK.
A check out report is compiled immediately at the end of a tenancy. The report is carried out prior to any cleaners, maintenance contractors etc entering the property.
An interim inspection is made part way through a tenancy and looks at the condition of the property, its contents, and any issues there may be.