Examination of vehicle
2. A person authorised by the Secretary of State to conduct an examination under paragraph 1(a) may refuse to conduct the examination if—
(a)the Secretary of State has not received an application form completed and signed by or on behalf of the keeper and containing such information as the Secretary of State may specify;
(b)the vehicle is not presented at the time and place appointed for the examination;
(c)the prescribed fee has not been paid;
(d)the person presenting the vehicle is not willing, to the extent necessary for the purpose of properly carrying out the examination,—
(i)to give the person authorised to conduct the examination access to the engine and the fuel and exhaust systems,
(ii)to operate the controls of the vehicle, or
(iii)generally to co-operate with that person;
(e)the vehicle is obviously unroadworthy;
(f)the vehicle is in so dangerous or dirty a condition that the examination cannot be carried out safely and properly;
(g)the vehicle has insufficient fuel or oil in it for the examination to be carried out; or
(h)the vehicle’s engine has failed electrically or mechanically.