So after a little research, it turns out that fuel out here is measured in AKI not RON. so our 94 is actually 99 by the UK standards:

" In the US, octane ratings in unleaded fuels can vary between 86 and 87 AKI (91-92 RON) for regular, through 89-90 AKI (94-95 RON) for mid-grade (European premium), up to 90-94 AKI (95-99 RON) for premium (European super)."