Callaghan sardonically accepting record of his speeches? (7)
I believe the answer is:
hansard
'record of his speeches?' is the definition.
'Hansard' can be an answer for 'record' (Hansard is an example). I'm unsure of the 'of his speeches?' bit.
'callaghan sardonically accepting' is the wordplay.
'accepting' says the answer is hidden in the clue (the answer has been accepted by the clue).
'HANSARD' is hidden within 'callaghan sardonically'.
(Other definitions for hansard that I've seen before include "Official record of Parliament" , "political account" , "Official record of parliamentary debates" , "Printed record of Westminster debates" , "Official report of the proceedings of the British Parliament" .)