1: The rope got twisted by a shrub (3-4)
 5: Drive an unusual visitor (7)
 7: Unfathomable letters from Lamb, say (7)
 8: End of the line in 28 across - it's of prime importance (7)
 11: Neil Armstrong initially brought back extraterrestrial (5)
 12: Hot and sultry, stripping right in current (7)
 13: Mr. Upton dressed, one suit being just like any other? (2-5)
 15: Something cold in Candice Bergen's makeup (7)
 16: The very young at times dash around seniors with energy (7)
 18: Closest home receives attention (7)
 20: Buses and trains. (7)
 22: Tied down holding back fighting (5)
 23: Fools around near hellholes (7)
 24: A sign of winter here in Paris -- clashes when ash is dumped (7)
 25: Candidate has no time for ease, apparently (7)
 26: Encase most of the Ashes wrongly (7)