Play a part on part of Canberra (5)

I believe the answer is:

acton

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'part of canberra' is the definition.
'acton' can be an answer for 'part' (I have seen 'part of London' mean 'acton' so perhaps 'part' could also mean 'acton'). I'm unsure of the 'of canberra' bit.

'play a part on' is the wordplay.
'play a part' becomes 'act' (I've seen this in another clue).
'act'+'on'='ACTON'

Can you help me to learn more?

(Other definitions for acton that I've seen before include "Respond in accordance with - London district" , "Gladstone's adviser" , "District of West London" , "London area" , "somewhere in London" .)

I've seen this clue in the Sydney Morning Herald.

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