Updated: Added conditions of authorisation for air tightness testing schemes.

This document sets out the notes on how a competent person self-certification schemes operator can demonstrate meeting the conditions of authorisation from 6 June 2012.

Air tightness tester schemes have separate requirements from other types of work - these are included in the second document.

https://www.gov.uk/government/publications/competent-person-schemes-conditions-of-authorisation