Going on again about a former Supreme Court judge (10)

I believe the answer is:

resumption

'going on again' is the definition.
(to resume is to start doing something again)

'about a former supreme court judge' is the wordplay.
'about' becomes 're' (common abbreviation for 'with reference to').
'a former supreme court judge' becomes 'sumption' (Lord Sumption, former UK supreme court judge).
're'+'sumption'='RESUMPTION'

(Another definition for resumption that I've seen is " fresh start is needed".)

I've seen this clue in The Guardian.

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