think outside the BOX
there are many countries that use adf/ndb facilities, that a UK PPL might visit.
Also they are a godsend, as situational awareness for ILS approaches.
I have just demonstrated the two NDB approach in Russia to a non believer.
He is also an american, who would not know an NDB if he fell over it.
Yes I know, I have a very high tech cockpit, but still when the chips are down like to think that I could conduct an approach with the little needley thingy.
In a former life I was able to navigate day and night over the UK, using the BBC transmitter location guide, also not forgetting Droitwich, centre of the known universe.
Please do not loose your basic skills.
its windy out