Long story about English leader (5)
I believe the answer is:
yearn
'long' is the definition.
(synonyms)
'story about english leader' is the wordplay.
'story' becomes 'yarn' (synonyms).
'about' is an insertion indicator.
'english leader' becomes 'e' (I can't explain this - if you can you should believe this answer much more).
'yarn' enclosing 'e' is 'YEARN'.
Can you help me to learn more?
(Other definitions for yearn that I've seen before include "Desire strongly" , "Desire, want" , "Pant - pine" , "Mark of injury" , "Long (for something)" .)