Quite strict on the checks.
Make sure you check all tyres and nuts, lights, ask the assessor to check your brake lights etc. Make sure you make a point of checking the height meter especially if they get you to use a single deck trailer and a double deck trailer.
The drive may be yard only at the moment due to covid, not out on the road as the assessor wont even get in the cab with you.
Mine was basically hook up to 2 trailers and back both on a bay. Nothing on the road.
Make sure you check the brake button on trailers before you hook up.
Hope this helps.