Revealed the truth - I'd say that hurt Mr Heath (5)
I believe the answer is:
outed
'revealed' is the definition.
(outing is a kind of revealing)
'truth i'd say that hurt mr heath' is the wordplay.
I cannot really see how this works, but
'mr' could be 'ted' and 'ted' is found within the answer.
The remaining letters 'ou' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'the' acts as a link.
Can you help me to learn more?
(Other definitions for outed that I've seen before include "Exposed in public" , "Revealed (someone) as gay" , "Exposed against one's will" , "Revealed the homosexuality of (someone)" .)