Clues are of 3 kinds:
1. they contain an extra word
2. they contain an extra letter
3. give an answer too short for its space
14a Ground located without nail covered in dust (6) A?????
16a Back on the take, driven by right to leave London for Edinburgh, say (7) ?N?????
20a Hand-reared lamb shunning set leaves to eat (7) ???O???