No Transponder?
A lot of PFA aircraft I've been look at recently don't have the same level of avionics as the C152s a lot of us learnt to fly on, for example no VOR or ADF, however as a secondary backup to the mk1 eyeball and map alot seem to have a hand-held GPS in there to aid nav - which is fine.
However very few have transponders and so I was just curious if that precluded you from obtaining certain services from ATC? For example when I trained nr Coventry I would ask for a FIS and was always given a code to squawk. If I didn't have a xponder would I still have been able to get a FIS? What about class D zone transits, would they generally be possible or do the controllers really require you to be able to squawk?