4: Large cab I maneuvered, following a set of rules (9)
7: Private dinner starts late (5)
8: Delicate stem is enlightening (5,4)
10: Rascal and wuss taking week off (3)
12: Set display on the Fourth of July (5)
15: Broadcast share in genuine show trial (9)
16: Ran amok, with club for a weapon (3)
17: Compete with life in France (3)
18: In love with copper? Gone to give a needle? (9)
19: Irish playwright livin soundly (5)
20: Walesa still embodies how Nobel Laureates soar? (3)
22: Dear spouse that was thoughtful (9)
26: Michael Caine, first outspoken host (5)
27: The woman records family diplomas (9)
28: Going after the final piece of puzzle for a very long time (3)