Well Clare, you are not alone with the Advanced Drivers Certificate!
I never got my HGV1, but apart from that I am licensed to drive anything on the road.
Lorries, Double Decker buses, Coaches with or without trailers etc, motorcycles and cars!!
I also have a current Licence to drive 3 x different stocks of Trains, which thankfully I do not have to do for a living!
I was once Operations Manager for Secure Parking Heathrow, as a CPC holder, I set up their bus service for them,
this was about 14-15 years ago, and they are now called Purple Parking!
The Boss/owner spent one week in UK and every other week in his Apartment and Yaght in Monte Carlo.
He drove a Bentley Turbo, in fact we used to store luxury vehicles of all types for their owners, & I used to get to drive them!.
I got to drive him to the Airport and then take the Bentley home, swapping it back the following morning!!
The looks of hate I used to get when driving it were unbelievable !!!
I bet you must get that as well!!
Don is licensed to drive a pair of shoes and I think he has missed out by never driving!!
But each to his/her own!!
LOL and Yammas