I took your advice and did some (even more) reading of threads,some pertinent,some not but informative in other ways and amprobably leaning towards a Humax.
Why I still hesitate is that my circumstances seem unusual.
I am in Margate, Kent, in a block quite high up, facing the sea. The local transmitters are all behind me and unusable (as are the Satellites).
I can, due to the height, access digital signals from London but no analogue signals.
So I have an indoor aerial that says it is "digital" (a Technika
"Boosted TV/FM Digital Aerial" from Tesco) and it works pretty well with my TV Freeview tuner.
And this where my ignorance (and probable misconceptions come in) as I see just one signal coming in.
So am I simply wrong (which I can easily accept

) and by putting a twin tuner PVR (or similar) between the aerial and the TV gain all the benefits available normally?
And would I need to do anything different with tuning or using the TV?
Again, thanks for any replies.
DAVE