Petrol rebate.

On the subject of mowing the lawn, it occurs to me that over the last twelve years in residence at my humble abode I have bought perhaps 15 litres of petrol each year for my mower. Bought at the pumps, this is taxed at Road Fuel duty rate. A quick web search suggests that fuel duty was 56.19 pence per litre when petrol was 105.64 pence per litre., so it will higher now, but that#s a reasonable ball park figure to play with.
So at 15 litres x 12 years x 56.19 pence per litre, I reckon the Governent have unlawfully taxed me to the tune of approximately £101.14 pence. How much are you owed?

I may just write to my MP and see what his take is on this subjec, and requesting my money back, with interest.