Just to clarify, when I say 'Anglian/Anglican' dialects I mean the dialects of the Angles, rather than the Saxons. Northumberland was part of the Angle kingdom of Northumbria. Other Angle kingdoms are East Anglia and Mercia.
The Saxon kingdoms are Wessex, Sussex and Essex. Kent was a Jutish kingdom. The Isle of Wight could be a Jutish kingdom, but I believe it was actually a Geatish kingdom.