1 Across, One accompanying sleuth has to accept ex - police chief (8)
9 Across, One musically wowing British Isles,touring Lowestoft/Unst locations (8)
12 Across, One who went forth in break: he's got seven more (10)
13 Across, One of the other 13 and 13 of the other one's (7)
Compiler - NIMROD
Many Thanks