More relaxed after church -- New Year service (8)
I believe the answer is:
ceremony
'service' is the definition.
(I've seen this before)
'more relaxed after church new year' is the wordplay.
'relaxed' is an anagram indicator.
'after' is a charade indicator (letters next to each other).
'church' becomes 'ce' (abbreviation for Church of England).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'year' becomes 'y'.
'more' anagrammed gives 'remo'.
'remo' put after 'ce' is 'ceremo'.
'ceremo'+'n'+'y'='CEREMONY'
(Other definitions for ceremony that I've seen before include "Possibly a parade" , "Rite, ritual or formal act" , "Event of ritual significance" , "formal public occasion" , "Pomp and 6" .)