The vehicle registration registers in the Essex Record Office cover the county of Essex to 1974 and the county borough of Southend to 1946. They do not include the county boroughs of East and West Ham.
To find vehicle registration records type in the two or three letters in the registration, e.g. Koo, and click on the Search button. The list of hits displayed shows the various registrations with those letters, and the year of issue. To order a volume, click on the entry with the correct sequence of letters and numbers for your registration.
For early registrations beginning with the letter F followed by a number, type the reference C/DF 11 into the Document Reference field at the top right of the screen and click on the Go button.
The whole catalogue of vehicle registers will appear. Click on the arrow next to Relevance at the top of the screen and then click on Date Ascending order to display the earliest registers first.