UK road tax rates
1948 A new flat rate tax was imposed: £10
cars registered after 1 January 1947 - £10
cars registered before 1 January 1947 - £7/10/- up to 6hp,
plus £1/5/- for each extra unit of horsepower 1953 Tax raised to £12 10s
Disc colours relate to the expiry date
1951 Diagonal green stripe 1952 Diagonal orange stripe 1953 Vertical red stripe 1954 Vertical blue stripe 1955 Vertical orange stripe 1956 Vertical green stripe All Disc should be printed 3 Inches (75 millimetres) in diameter