Leading Tories being honourable? (7)
I believe the answer is:
upright
'being honourable?' is the definition.
(I've seen this before)
'leading tories' is the wordplay.
'leading' becomes 'up' (similar in meaning).
'tories' becomes 'right'.
'up'+'right'='UPRIGHT'
(Other definitions for upright that I've seen before include "honestly" , "not grand" , "Honest like a vertical post" , "Pole; principled" , "Good" .)