Long story about English leader (5)
I believe the answer is:
yearn
'long' is the definition.
(I know that long can be written as yearn)
'story about english leader' is the wordplay.
'story' becomes 'yarn' (synonyms).
'about' means one lot of letters goes inside another.
'english leader' becomes 'e' (I am not sure about this - if you are sure 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)" .)