Across

 1, 12 Down Classic place of worship is ascertainable with tips possibly (5,6,8)

 9 Friend taken with playing of Stainer, religious composer (10)

10 Develop good argument? (4)

11 Magnate close to trendy firm among fashionable set (6)

13 Volunteers with archdeacon attending Queen and religious composer (7)

15 Men trapped in river flood (7)

16 Promote a verger initially in series of steps (7)

18 Additional note among various notes for relative (7)

21 Piece of paper given to servant when there’s failure to meet target (8)

22 Turbulent male featuring in parable? (6)

23 Free party held by international body? (4)

24 One who’s smashing figure in the church? (10)

25 You’re to mend damaged book (11)

Down

 2 Plant beginning to atrophy — chaps pulled up one (7)

 3 Fixing time in middle of day is unacceptable (3,2)

 4 Greek character left near spy (6)

 5 Coach, not one right to block location for bus, say (9)

 6 Customer in uniform? (7)

 7 One graduate joins another, inspired by unusually green lady, noted follower of Jesus (4,9)

 8 Comfort no inns supply for member of a Protestant church (13)

14 Service is accommodated within European Union plan (9)

17 Say yes to a very quiet ramble (7)

19 Argument for liberal to wear medal — a thorny matter (7)

20 Record mass, one held in northerly pilgrimage site (6)

22 Sermon’s beginning with hackneyed stuff — result is disdain (5)

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