4. sounds sporty - but very business like (6)
6. could be retained within (5)
12. last before bed (8)
15. wartime protection along with gas mask (3,3)
20. bell shaped for the flapper (6,3)
21. worn in rice fields (6,3)
24. granny's is aquilegia (6)
25. with red jacket - he always gets his man (7,3)
28. main fighter wears this with cape (7,3)
30. did ruth wear one in that u s game (8,3)
Cowboys wear stetsons and they're not known for always getting their man whereas that slogan goes with the Mounties. And if you google Mountie Hat, you'll see it's different from a stetson.
thank you all very much for your help, still got one or two more though
31. flue to a heater - favoured by isambard (9,3)
38. give tim the help to keep off sun (4,6)
39. may be a gale - but it's waterproof (3,6)
48. only five shillings for derby porcelain (5)