Across
1
Terrible cheat to get about 10,000 square metres (7)
5
Old instrument is still on fire (7)
9
Check literature about married setter (5)
10
Checked security after Irishman went round (9)
11
Side returned after mistake with apparently harmless object (5,4)
12
Time for a magic formula (5)
13
Beginning to tie 18 with string (5)
15
Head coach wasting time with something requiring little mental effort (2-7)
18
Drink fermented in iron pot (5,4)
19
Doctors operating to save body part (5)
21
Queen wearing dress got larger (5)
23
Biological building blocks stop oxygen being withdrawn from instruments (4,5)
25
Nick not allowed in audition with group of musicians (5,4)
26
Priest stood up to deliver dull discourse (5)
27
Object of much discussion caught in shoe (7)
28
Sieves through mysteries (7)
Down
1
Fish skipping bail in basic accommodation (7)
2
Disturbance caused by vulgar cover for books on island (9)
3
Anxious participation in Protestant synod (5)
4
Ten operas translated into language that's artificial (9)
6
Annoyed about one bug found in French roll (9)
7
Busy individual penning lines for beautiful woman (5)
8
Duke told off Queen's small child (7)
14
Ten exotic fish originally destined to be caught up in a net (9)
16
Trade admitting death of drink provider (9)
17
Cat turning up across Loire after mixing ingredient for perfumier (6,3)
18
Marker put over a South American constellation (7)
20
Soy sprinkled on short tailless shellfish (7)
22
Start without new artist in musical drama (5)
23
Wrap fruit in edges of sail (5)
24
God presents trophy to fish (5)