1: I renew one TV in a complicated way to get an oral examination (9)
6: sliced again with cuter swing (5)
9: 15-across Something good that blinds copper (5,7)
10: It causes a crash for one who owns a lot? (9)
11: Beauty stripping top and bottom is an additional feature (3)
12: Nude mag flip-flopped describing it's size (9)
13: Flower part to lapse badly (5)
15: Curtailed clothing allowance possibly a revolution factor (4,5)
16: As an aid to memory for broken men, first mode harmonics hold no danger. (9)
18: Many Christmas trees ultimately left in the best place? (5)
19: Tempory respite about the goal. (9)
21: Perfect counter-spy equipment (3)
24: Ill-conceived encore run for Edward VIII, say (9)
25: Out of line like London gardens (5)
26: Balance a small plate (5)
27: First popular promise - extreme appeal (9)