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See Homepage. This page: Find out more about the 'CM' series of registration numbers, used in the Birkenhead (B) area.

CM series of older car registration numbers.

Registration letters >> CM series
This page lists registration number codes from the CM series, a series allocated to the Birkenhead (B) area. Also included, where known, are the date periods that these car registration numbers were used in. The data covers the period of 1900 through to 1972, so registrations seen on later cars wouldn't necessarily be included in this information.

Interpreting a car's registration number.

The majority of post-war car numbers incorporate a three letter code - where this is the case, letters 2 and 3 signify the location code. So, for instance, a car with the registration number 638 GCM or TCM 512D would be a Birkenhead (B)-issued number. A car with just two letters, ie CM, would also be from this area. Listed below are the known CM series registrations, with added information (where available) describing when each series was first used, and in a few cases, when it came to an end. Some letter codes were used for more than one period during the 20th Century. This information can be invaluable when trying to date vehicles seen in old photographs, or in old films for instance.
Also if your car has lost it's original registration, perhaps sold off by a previous owner as a "cherished" number, this information will help you find a suitable replacement, or at least identify which series would be suitable, based on the age of your car and where it was first registered.
CM Registrations - Birkenhead (B).
Reg. Letters Year Letter Start -> End Date (if known)
ACM B AUG 1964 ->
ACM JAN 1948 ->

BCM C JAN 1965 ->
BCM DEC 1950 ->

CCM C JUN 1965 ->
CCM DEC 1952 ->

CM JAN 1904 -> JAN 1931

DCM D JAN 1966 ->
DCM JUN 1954 ->

ECM D APR 1966 ->
ECM JUL 1955 ->

FCM E JAN 1967 ->
FCM D AUG 1966 ->
FCM OCT 1956 ->

GCM E MAR 1967 ->
GCM NOV 1957 ->

HCM F AUG 1967 ->
HCM E JUL 1967 ->
HCM D JAN 1966 ->
HCM JAN 1959 ->

JCM F NOV 1967 ->
JCM OCT 1959 ->

KCM F MAR 1968 ->
KCM MAY 1960 ->

LCM G OCT 1968 ->
LCM FEB 1961 ->

MCM H AUG 1969 ->
MCM G APR 1969 ->
MCM OCT 1961 ->

NCM H DEC 1969 ->
NCM JUL 1962 ->

OCM J AUG 1970 ->
OCM H JUN 1970 ->
OCM DEC 1962 ->

PCM J FEB 1971 ->
PCM JUN 1963 ->

RCM K AUG 1971 ->
RCM DEC 1963 ->

SCM K MAR 1972 ->
SCM MAY 1964 ->

TCM L AUG 1972 ->

UCM L JAN 1973 ->

VCM M AUG 1973 ->
VCM L JUN 1973 ->

WCM M DEC 1973 ->
Return to the main vehicle registrations page.

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