1: Hold onto string and file (5)
2: Check German car ahead of time (5)
3: Model unusually creepy hat (9)
4: Make known one pound increase after high school (7)
5: Zero writing for 'humble' Wilbur's speech? (7)
6: Digs for leads in homicide of the elderly lady (5)
7: Capital - a Schubert composition (9)
8: Walesa still embodies how Nobel Laureates soar? (3)
13: Hellish center for immigration? (5)
14: Ripped off a group of hard-up Edwardians (5)
15: Tennis linesmen look for this tinea, perhaps (4-5)
17: Can lot be plastered around the jug at night? (9)
19: An animal which flies high but comes back for a place to wash (7)
20: Beatnik embraces nude in nightclub (7)
23: Headless rodent left by bird (5)
25: One who regrets following initial tendencies is increasingly sincere (5)
26: Come to Korea - Chinese part (5)
27: Sounds like everything: a bore (3)