@bfisher, no I haven't read any of his books previously, but I've moved onto book 3 of the Richard Hannay series, Mr Standfast (written in 1919). I suspect that from time to time I shall continue to dip into his writings as I've got the Delphi Classics Complete Works.
Oh yep I noticed that he wrote according to the mores of his day, which don't accord with the mores of today.