Ferguson, R.S. 'The Earthworks and Keep, Appleby Castle.' Transactions of the Cumberland and Westmorland Antiquarian and Archaeological Society os 8 (1885): 382–95.
Ferguson, R.S. 'Kendal Castle.' Transactions of the Cumberland and Westmorland Antiquarian and Archaeological Society os 9 (1886): 178–85.
(city-county) in Norfolk
Fiennes, Celia. My Great Journey to Newcastle and to Cornwall: 1. From London through East Anglia to Ely. The Journeys of Celia Fiennes; Christopher Morris, ed. London: The Cresset P, 1947.
Cheshire
Figueiredo, Peter de, and Julian Treuherz. Cheshire Country Houses. Chichester: Phillimore, 1988.
Lancashire
Fishwick, Lieut.-Col. 'The Old Castles of Lancashire.' Lancashire and Cheshire Antiquarian Society 19 (1901): 72–6.
Fleetwood-Hesketh, Peter. Lancashire Architectural Guide. London: John Murray, 1955.
(All)
Fleming, John, Hugh Honour and Nikolaus Pevsner. Penguin Dictionary of Architecture and Landscape Architecture. Originally pub as The Penguin Dictionary of Architecture, 1966. London: Penguin Books, 1999.
Devon
Fletcher, Martin. The Mansion at Columbjohn, Broadclyst, Devon. Archaeological Investigation Report Series AI/13/2003. Exeter: English Heritage, 2003.
Somerset
Forbes, J. Edwin. 'Barrington Court' Somersetshire Archaeological and Natural History Society Proceedings 71 (1925): 88–92.
Sussex
Forde-Johnston, James. Great Medieval Castles of Britain. London: The Bodley Head, 1979.
