Here's half Millar's list:
Casino Royale by Ian Fleming
The first Bond, destined (even in the new version) never to be filmed properly: 007 messes up and doesn’t get the girl.
The Scarlet Pimpernel by Baroness Orczy
Perhaps the first spy novel, an aristocrat saves toffs from the guillotine.
Funeral in Berlin by Len Deighton
The East End anti-Bond Harry Palmer (immortalised by Michael Caine).
Click here to see Millar's other titles.