Across

1: Singer (7)

5: Say yes (7)

6: Official (5)

8: College (7)

11: Services (9)

15: Happiness (5)

17: Honest man (3)

19: Train operator (6)

20: Alcoholic (12)

22: Medical room (2)

23: Spiritual fighter (8)

25: Joker (5)

26: Inquisitor (7)

27: Origin story (8)

29: Layered folk (5)

30: Charge (7)

32: Ugly (7)

33: Soft (5)

34: Exclamation (7)

37: Refreshing (7)

Down

1: Hang up (7)

2: Beginning (6)

3: Atheists (8)

4: Revelatory instrument (7)

7: Face (6)

8: Believers (7)

9: Mad (5)

10: Goat (4)

12: Othello (7)

13: Hotel (3)

14: Perfect (7)

16: Print (10)

18: 5th atom (5)

21: Popery (8,6)

24: Configuration file (3)

28: Promoted bishops (11)

31: Old (8)

35: Cambridge's local cathedral (3)

36: Sister (3)