The Wood Wife - Terri Windling
Left Hand of Darkness & most of other Hainish cycle - Ursula K LeGuin
Swallows and Amazons - Ransome
Rebecca, The House on the Strand & some others - Daphne du Maurier
Lord of Light - Roger Zelazny (& all the rest)
She Fell Among Thieves, The House That Berry Built & all the Chandos books - Dornford Yates
Triffids, Kraken and Midwich - John Wyndham (& the rest)
The Smiley books - John le Carre
Venetia, The Toll Gate & the Masqueraders - Georgette Heyer
The Moon of Gomrath - Alan Garner
Merlin Triology and all the romances - Mary Stewart
All the Raymond Chandler
The Dark is Rising - Susan Cooper
Lots of Wilkie Collins
Dosadi Experiment - Frank Herbert
One Man's Wilderness - Sam Keith
LOTR & Hobbit
Narnia
Jinian Footseer series - Sheri S Tepper
I think I'll stop there