1 across. Immediate – tuna sensation (anag). 13 letters.
8 across. Supportive – expert. 3 letters.
9 across. Related to bishops. 9 letters.
10 across. Become established. 4 letters and 4 letters.
11 across. Jenny or Christopher? 4 letters.
13 across. Hildegard of Bingen, for instance. 6 letters.
14 across. Organic fertiliser. 6 letters.
16 across. Box, back or boiler? 4 letters.
17 across. Sarsen stone, perhaps. 8 letters.
20 across. Lie dormant. 9 letters.
21 across. Shot – youngster. 3 letters.
22 across. Inserted – in late chapter (anag). 13 letters.