Where is East Anglia?

An interesting piece from the BBC which explores different definitions of East Anglia.
It has a number of maps based on different potential areas which lie within it.
Some people include Cambridgeshire for example and others don't.
I live in Norfolk which is definitely 'in'....
Could also be used as a discussion question relating to other areas.
And also consider the marketing of the region by Visit East Anglia and similar ideas.