To put this in perspective if you were to refuel at a supermarket 10 times with a 50 litre fuel tank this would earn you around 5000 points. This would then entitle you to a £5 voucher which you are then only eligible to spend in store and on certain products. But if you were to refuel at Fuller-Fuel 10 times with a 50 litre fuel tank this would save you 10 times the amount as a supermarket! A total of £50 or £5 per fill up, which would be a cash saving, therefore you can spend this anywhere you like.
*The above calculations are based upon BioDiesel priced at 108ppl & regular diesel priced at 125ppl, prices are subject to change.