On-Line Church Guides (mainly East Anglia)
Suffolk Churches - Simon Knott's original on-line church guide project - wonderful!
Norfolk Churches - After Suffolk, Simon Knott moves on to Norfolk Churches
Cambridgeshire Churches - in a similar vein, this time by Ben Colburn and Mark Ynys-Mon
Aidan Semmans' Churches - nice photos of East Anglian Mediaeval Churches.
Painted Church - Mediaeval wall painting in the English Parish Church - a catalogue by Anne Marshall