In London's East End, get angry and mean (7)
I believe the answer is:
average
'mean' is the definition.
(I know that mean can be written as average)
'in london's east end get angry' is the wordplay.
I cannot really see how this works, but
'east' could be 'e' (abbreviation) and 'e' is found within the answer.
'get angry' could be 'rage' (I've seen this in another clue) and 'rage' is present in the answer.
This explanation may well be incorrect...
'and' acts as a link.
Can you help me to learn more?
(Other definitions for average that I've seen before include "Normal; mean" , "Fair to middling" , "Mean; standard" , "Mean - everyday" , "Mean figure?" .)