Editor, sound as a bell, not backing English scientist (9)
I believe the answer is:
eddington
'english scientist' is the definition.
'Eddington' can be an answer for 'scientist' (Eddington is an example). I'm unsure of the 'english' bit.
'editor sound as a bell not backing' is the wordplay.
'editor' becomes 'ed' (abbreviation).
'sound as a bell' becomes 'ding' (make a ding sound).
'backing' shows that the letters should be reversed in order.
'not' in reverse letter order is 'ton'.
'ed'+'ding'+'ton'='EDDINGTON'
Can you help me to learn more?
(Another definition for eddington that I've seen is " Good neighbour".)