Tillingham's Garage is located on the site of what is now Golden Lion Court, East Street, Ashburton, Devon.
Betty asks Jamie to put a gallon (4.5 litres) of petrol in her car. He charges her two shillings and a halfpenny, around 10 pence ($0.13) in 2021.
Two shillings for a gallon of petrol in 1950 would be worth £2.64 in 2022, according to the Bank of England's inflation calculator (£1 in 1950 = £26.54 in 2022.)