Quick clues; 13d precincts (5) a-b-t ( 1st letter could also be u)
Cryptic clues;
6d Urge worker on strike to give statement for papers (5,7) -r-d- -------
12a Conclude it could be somewhat delicate (6) -i---- (finish?)
19a Made an attempt at courting (5) t---- (tried)
21a Indicate attention to exhibition dividend (4,8) show -n------
Thank you Baldric and sandyRoe. Not sure about trade account. If 12a is finish 2nd word would start with h and 17a clue is They are relatively close (3) I thought could be kin which would make 3rd letter of second word n. But You may be correct Baldric