Day 5 bit warmer.

(Mpg 48.41) KM per Litre:17.13 Pence per mile:9.10 136.1 Miles £12.38

Light came on a 131.8.
Still been riding the bike a bit hard, so I'll see how things improve as I ease off again. Maybe even get that magic 60mpg.
I've been told by a friend that works at BP if I keep the fuel in there long enough then it should clean the engine and improve the mpg more. So one more week and then its on to the Optimax or Tesco Super.