Finding this extremely difficult today.
8d. Shower to upset? Could be descriptive of old carriages(3-5)
9d A cup or pot of tea.(4,2) ? Brew up??
17d. Of a road temporarily out of use(5,3) ????? off
29a Extremely strong sportsperson (11)???e?lifter??
11 & 16a A flaunting of one's importance (5,4) no letters