Across
1 Puzzles as public transport holds me back (7) 5 Beginning to operate, doctor slices tiny bone (7) 9 Caramel once used to keep fruit (5) 10 Stakes securing run for animals (9) 11 Wind instrument a submariner came across – I’m not sure (10) 12 Story encapsulating French existence (4) 14 When 18 One dad and son in the money getting crosser (8,4) 21 Forlorn countenance going back across line (4) 22 One in trade union tracking Greek city growth (10) 25 Conclude English taste initially missing and make an effort (9) 26 17’s lucky success (5) 27 Defensive work of primate in role (7) 28 Round up about a pound for such a weapon (7)