Telegram about top-class record deserving censure (8)

I believe the answer is:

culpable

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'telegram about top-class record deserving censure' is the definition.
I can't judge whether this defines the answer.

'telegram about top-class record' is the wordplay.
'telegram' becomes 'cable' (cable is a kind of telegram).
'about' means one lot of letters goes inside another.
'top-class' becomes 'U' (as in U and non-U speech).
'record' becomes 'LP' (abbreviation for long play record).
'u'+'lp'='ulp'
'cable' placed around 'ulp' is 'CULPABLE'.

Can you help me to learn more?

(Other definitions for culpable that I've seen before include "Guilty" , "Answerable" , "Criminally responsible" , "Blameworthy, censurable" , "Proboscis" .)

I've seen this clue in The Irish Independent.

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