5a: Northern European sea (6): ?e????
10a: A very loud mechanical horn (6): ?d????
13a: Genial, pleasant (8): ???m????
26a: Noise-maker formerly popular at football matches(6): r???s?
28a:Walk in a flamboyant manner (6): s???a?
17d: Easter LP upset high churchmen? (8): ?r?l????