Further to my previous reply - thanks to you all. Yes this was the initial test at LGW. Regarding what tests he did I am not sure of them by name but one where he asked me to hold a black contraption in front of my eyes and tell him what the white and red arrow pointed to. Then one where I had to tell him where a red laser (vertical and horizontal) lay in relation to a thicker red line. He then had me looking at the letter board again and held a rule in front of both eyes, the rule had some kind of lenses and I had to look at a letter and tell him when I saw a shadow. Lastly he held his pen in front of me, told me to focus on it and tell him when I saw double.
I have booked another appointment on Friday with someone to see if they can tell me anymore.