Car Registration Plates of UK follow three major formats. The first is the prefix format which follows a single year defining letter, then a number varying between 1 to 3 digits followed by 3 letters. The second is the suffix format following the structure opposite to prefix i.e. 3 letters followed by a number ranging between 1 to 3 digits and then a year determining letter. The third format for the Car Registration Plates of UK use the new style method which follows the format of 2 letter prefix, then 2 digit year identifier followed by 3 letters.

All Car Registration Plates define the unique identification of the owned cars with these various formats implemented on them. Besides these three major formats, the Car Registration Plates carry a dateless format which was active on vehicles prior to 1963. These plates had no year identifying number and can be assigned to any of the vehicle irrespective of their age. These Car Registration Plates carried so much of history with them and very tedious to source, they called for high prices in the UK market and as a result there are many investors for them which made a constant rise in their values.