Notice welcoming church offered great service (4)
I believe the answer is:
aced
'offered great service' is the definition.
The definition and answer can be both to do with social activities as well as being past participle verbs.
Maybe there's a link between them I don't understand?
'notice welcoming church' is the wordplay.
'notice' becomes 'ad' (both can mean an advertisement).
'welcoming' is an insertion indicator (in sense of 'inviting in').
'church' becomes 'ce' (Church of England).
'ad' enclosing 'ce' is 'ACED'.
Can you help me to learn more?
(Other definitions for aced that I've seen before include "Reached a golf hole in one shot" , "got a hole in one" , "Comprehensively beaten" , "passed with highest marks in US" , "Sailed through" .)