Ayrton Senna noun a ten pound note UK Rhyming slang for “tenner”; formed from Brazilian Formula One racing driver Ayrton Senna da Silva (1963–1994).
You take this hundred quid in used Ayrton Sennas and I’ll be off in the old Camilla Parker-Bowles [Rolls-Royce car]. — Mervyn Stutter, Getting NowhereFast, 2004