Each swirl of nostalgia overlooking old Saxon kingdom (4,6)

I believe the answer is:

east anglia

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'old saxon kingdom' is the definition.
The definition suggests a singular noun which matches the answer.

'each swirl of nostalgia overlooking' is the wordplay.
'each' becomes 'ea' (abbreviation).
'swirl' is an anagram indicator (I've seen 'swirling' mean this).
'of' becomes 'o''.
'overlooking' suggests deleting specific letters.
'nostalgia' with 'o' taken away is 'nstalgia'.
'nstalgia' with letters rearranged gives 'stanglia'.
'ea'+'stanglia'='EAST ANGLIA'

Can you help me to learn more?

(Other definitions for east anglia that I've seen before include "Steal again (anag.)" , "old kingdom - with 25a" , "English region" , "Part of UK" , "part of England" .)

I've seen this clue in The Times.

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