Petrol has never been £1.90 a litre for any length of time
https://www.racfoundation.org/data/uk-pump-prices-over-time
Thank you for linking to the data showing petrol at about £1.90 a litre in 2022.
That was for a weekly peak in the data… Britain has never had a price of 1.90 / litre for any sustained length of time
Your original comment remains misleading