Although the registry is technically incomplete, this is not a significant issue.
As registration was introduced (as someone explains above, England is _old_) transfers are obliged to be registered, at first it was transfers for sale, but gradually other transfers were added. It is not possible, since registration was switched on for the last of England, to transfer real property without registering, the transfer is invalid if you try.
So, if the land isn't registered, that means it hasn't been transfered since registration began. You're talking about e.g. miles of empty wilderness that are owned by some old guy somewhere. THAT sort of thing isn't secret, everybody in the area will know who owns that "Oh, that's part of Lord Smith's estate. I expect his son manages it these days, of course the son is 73 so you don't see him about".
As registration was introduced (as someone explains above, England is _old_) transfers are obliged to be registered, at first it was transfers for sale, but gradually other transfers were added. It is not possible, since registration was switched on for the last of England, to transfer real property without registering, the transfer is invalid if you try.
So, if the land isn't registered, that means it hasn't been transfered since registration began. You're talking about e.g. miles of empty wilderness that are owned by some old guy somewhere. THAT sort of thing isn't secret, everybody in the area will know who owns that "Oh, that's part of Lord Smith's estate. I expect his son manages it these days, of course the son is 73 so you don't see him about".