Edward, touring the United Kingdom, did terrible damage! (5)

I believe the answer is:

nuked

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'did terrible damage' is the definition.
Although both the answer and definition are past participle verbs, I can't understand how one could define the other.

'edward touring the united kingdom' is the wordplay.
'edward' becomes 'Ned'.
'touring' is an insertion indicator (touring can mean going round).
'the united kingdom' becomes 'UK' ('UK' can be a synonym of 'united kingdom').
'ned' going around 'uk' is 'NUKED'.

Can you help me to learn more?

(Other definitions for nuked that I've seen before include "Used bombs" , "zapped into oblivion?" .)

I've seen this clue in the Evening Standard.

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