1 down. Hard, skin or bone? 5 letters.
2 down. Ruritania oath (anag) – demanding absolute obedience. 13 letters.
3 down. Equestrian sport. 8 letters.
4 down. Novelist buried in Winchester Cathedral. 6 letters.
5 down. ____ Wintour, Vogue editor-in-chief. 4 letters.
6 down. V2 rocket, for example. 6 letters and 7 letters.
7 down. Cradle song. 7 letters.
12 down. Opening night. 8 letters.
13 down. Wallow in it. 7 letters.
15 down. Bread fruit? 6 letters.
18 down. Oily fish. 5 letters.
19 down. Probability. 4 letters.