The British Library possesses a good many illuminated manuscripts (apart from the Lindisfarne Gospels). Four will be presented below. (I will link to a new one each day.)
(1) Luttrell Psalter, ca. 1340 --
(2) Sherborne Missal, ca. 1400 --
(3) Golf Book of Hours, ca. 1540 --
(a) Additional Ms. 24098, 8 full pages; illuminated by Simon Bening
Sforza Hours, ca. 1500 --
(a) Additional Ms. 34294, 12 full pages; illuminated by Birago and Horenbout.