Requirements for Authorisation D Issue Date March 2019 34 testing service. If a company is reconstituted in away that leads to anew company registration and number being issued then it will be regarded as anew entity and anew authorisation is needed. If, in a partnership, a partner leaves or joins the partnership this becomes anew entity and anew authorisation is needed. The same is true in the case of a sole trader who either takes on a partner or forms a company. 3. Authorised Examiners (AEs) Responsibilities 3.1 General 3.2 Premises and Equipment 3.3 Access by DVSA Staff 3.4 Security 3.5 Testing Responsibilities 3.6 Cessation for Disciplinary Reasons 3.7 Changes to Businesses The main responsibilities of the AE are outlined below, further details on the administration of the MOT Service can also be found in The MOT Testing Guide (6 th Edition. It is important that you understand all that is required to bean AE before signing the application.