Company set up a lot of ongoing church event (10)
I believe the answer is:
occurrence
'event' is the definition.
(I know that occurrence is a type of event)
'company set up a lot of ongoing church' is the wordplay.
'company set up' becomes 'oc' (I can't explain this - if you can you should believe this answer much more).
'a lot of' means to remove the last letter (most of the word but not all of it).
'ongoing' becomes 'current' (similar in meaning).
'church' becomes 'ce' (Church of England).
'current' with its last letter taken off is 'curren'.
'oc'+'curren'+'ce'='OCCURRENCE'
Can you help me to learn more?
(Other definitions for occurrence that I've seen before include "Happening" , "Event" .)