No 2,
The answer is yes - roughly. I'm not going to count them all, but I think Pooleys and AFE have roughly the same number of UK airfields (AFE I believe advertise that they have the most), and (without counting) Bottlang is similar but remember that includes the Irish airfields as I mentioned before.
Bottlang has fewer farmstrips than the others, but then you can always buy Lockyears farmstrips guide as well, although why licenced airfields like Sandtoft are in the farmstrips guide is beyond me.