Last few. 28a Beginning of the end of parades of Fords (4, 2, 3)
S - N - D - N - T
22a Titanic survivors, but later mostly ruined. (8) C - L - S - A -
Looks like COLOSSAL, but can't see the word play.
16a A stern doctor we're told (4) - L - P
Thanks a lot.