Small amount of parking in Channel Island (5)

I believe the answer is:

spark

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'small amount' is the definition.
'spark' can be an answer for 'amount' (spark is a kind of amount). I am unsure of the 'small' bit.

'parking in channel island' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'in' means one lot of letters goes inside another.
'channel island' becomes 'Sark' (Sark is one of the Channel Islands).
'p' going inside 'sark' is 'SPARK'.

'of' is the link.

Can you help me to learn more?

(Other definitions for spark that I've seen before include "Fiery particle" , "Fragment of a burning substance" , "Means of ignition" , "Flicker -- provoke" , "Bright flash; ignite" .)

I've seen this clue in The Mirror.

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