  == Collins Guide to Cathedrals, Abbeys and Priories ==  This is an excellent page; that needs to be more widely linked in.  I note that the basic source is Alec Clifton-Taylor; but would suggest that Henry Thorald provides a more complete gazetteer.  For instance Thorald includes both Dale Abbey and Lastingham, which this list omits.  Thorald sets his criteria rather more widely than those for this list (obviously he includes churches that are now cathedrals, which would not be included).  But he also includes:  - Former monastic churches in Wales, - Former monastic churches now used for colleges and schools (e.g. Milton Abbas, Jesus College Cambridge.  If I add in missing churches from Thorald's gazetteer, should I continue with the two exclusions above.  Milton, for example, has only been a school chapel since the 1950s.   