Frankly didn't bother.
All these things of "It builds experience..." - you can build the experience up yourself, without having to fork out money for it.
Night driving - done that [1am from Bristol to my home...a 2hrs30 drive...]
All weathers - well, aside from snow...done that.
Dual carriageways - part of my test route.
Motorways - did that like the week after I passed cause I had an open day in Swansea to get to...
Town driving - I do that every day to get to and from work.
Country roads - there are plenty of them round here. It's almost unavoidable to not use them at least once.
So, I saved myself some money. As for my insurance, it wasn't all that bad to begin with. It was like £1000...or so my mother kept saying.
I like how the pass plus site claims motorways are like no other roads. I think they'll find a motorway to be a dual carriageway, with an extra lane; the middle lane is hogged by middle-aged men, in big cars, doing under the limit, but never moving back into the outside lane; the inside lane is for boy racers and young guys with fast cars; the outside lane is for those of us with no rush in life. That's all you need to know. =/ £20? For that? I think not.
Who cares about my premiums? I'd have spent £20/hour, on what my instructor claimed was a 9 hour course, just to get a £100 discount. I think not...