

Edit 19/08/15: Much vaunted drops in diesel price recently, so thought I would update. You will see substantial rise in both price and index of UL (that no-one is talking about) whilst the diesel price (much talked about!) is back to where it was in Jan, but the index has risen a bit so it is 'relatively' expensive!
Edit 26/01/16: Crude price well down, so I thought I'd see where we are at. Index of both now higher than it's been since I started calculating, so it could be relatively cheaper. Tax rates currently nudging towards 400%


Edit 01/05/18: Update after a long break; fuel currently very cheap - see my post at the end!
Here's the data. Crude in £ / barrel, UL £/l / index, Diesel £/l / index
01/05/18 Crude: 54.22, UL 1.239 / 0.835, Diesel 1.269 / 0.881
26/01/16 Crude: 20.94, UL 1.019 / 1.285, Diesel 0.999 / 1.206
19/08/15 Crude: 31.15, UL 1.159 / 1.239, Diesel 1.129 / 1.158
23/01/15 Crude: 32.02, UL 1.059 / 0.945, Diesel 1.129 / 1.127
16/01/15 Crude: 31.70, UL 1.059 / 0.954, Diesel 1.129 / 1.138
09/01/15 Crude: 33.72, UL 1.079 / 0.946, Diesel 1.149 / 1.119
02/01/15 Crude: 36.39, UL 1.119 / 0.968, Diesel 1.169 / 1.083
19/12/14 Crude: 38.14, UL 1.149 / 0.990, Diesel 1.189 / 1.077
12/12/14 Crude: 40.33, UL 1.189 / 1.019, Diesel 1.229 / 1.101
05/12/14 Crude: 44.16, UL 1.199 / 0.949, Diesel 1.239 / 1.025
28/11/14 Crude: 46.21, UL 1.219 / 0.943, Diesel 1.259 / 1.015 (Note oil price sudden drop 6/11 due to OPEC announcement)
21/11/14 Crude: 50.70, UL 1.219 / 0.860, Diesel 1.259 / 0.897
14/11/14 Crude: 49.14, UL 1.129 / 0.887, Diesel 1.259 / 0.955
7/11/14 Crude: 52.32, UL 1.229 / 0.849, Diesel 1.259 / 0.897