I can remember when UK prices were simply £ / Gallon. Politicians decided to force us into accepting pricing in litres .. so that each subsequent petrol tax rise looked like a smaller price increase per litre than per gallon !
Anyway, £1.20 is per Litre means its approx £5.50 per Imperial gallon, or $8.50.
For the cost of a UK gallon, an EV will drive approx 300 miles on £5.50s worth of night rate electricity, which is nearly 1/10th cost of using a petrol car in the EU.]