Unlikely worshipper in church in Durham? (5)
I believe the answer is:
hindu
'unlikely worshipper' is the definition.
'hindu' can be an answer for 'worshipper' (worshipper of Hindu gods). I am not sure about the 'unlikely' bit.
'in church in durham?' is the wordplay.
'in' says the answer is hidden in the clue.
'HINDU' is hidden in the letters of 'church in durham'.
(Other definitions for hindu that I've seen before include "Member of great Indian religion with belief in reincarnation" , "Swami, perhaps" , "One practising an Indian religion" , "Believer in South Asian religion" , "Devotee of Indian religion" .)