ayrton (senna), n. — Green’s Dictionary of Slang

ayrton (senna) n.

[rhy. sl. = tenner n. (1); ult. champion racing driver Ayrton Senna (1960–94)]

£10, a £10 note.

1992		R. Puxley Cockney Rabbit.
2000		Pseudodictionary.com 🌐 ayrton – London rhyming slang for a ten pound note, named after late Formula 1 driver Ayrton Senna. Ayrton Senna = tenner. ex. Lend us an Ayrton, you tight git.
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.