Green’s Dictionary of Slang

coat and badge v.

also C and B
[rhy. sl.; ult. Doggett’s Coat and Badge, awarded to Thames watermen who, with this prize, had the right to charge higher fares in their mid-19C heyday]

to cadge; usu. in phr. on the coat and badge, on the C & B, cadging.

[UK](con. 1914–18) Brophy & Partridge Songs and Sl. of the British Soldier.
[UK]L. Ortzen Down Donkey Row 11: Coat and Badge – Cadge.
[US]Wentworth & Flexner DAS.
[UK]Dodson & Saczek Dict. of Cockney Rhy. Sl.
[UK]R. Puxley Cockney Rabbit.
[UK]B. Kirkpatrick Wicked Cockney Rhy. Sl.