On return, is not changing one’s ideas (7)

I believe the answer is:

notions

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'one's ideas' is the definition.
'notions' can be an answer for 'ideas' (notion is a kind of idea). I'm not sure about the 'one's' bit.

'on return is not changing' is the wordplay.
'return' is a reversal indicator.
'changing' indicates anagramming the letters.
'on' in reverse letter order is 'no'.
'is'+'not'='isnot'
'isnot' with letters rearranged gives 'tions'.
'no'+'tions'='NOTIONS'

Can you help me to learn more?

(Other definitions for notions that I've seen before include "Thoughts" , "Fanciful or capricious ideas" , "Vague ideas" , "Whims, ideas or small personal articles" , "Fanciful feelings" .)

I've seen this clue in the Evening Standard.

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