Registration Area Codes pre-2001

S Edinburgh
SA Aberdeen
SB Argyll until 1974 then Oban until 1980, then Glasgow from 1981
SC Edinburgh
SD Glasgow (Ayr until 1981)
SE Aberdeen (Keith until 1981)
SF Edinburgh
SG Edinburgh
SH Edinburgh (Selkirk until 1980)
SJ Glasgow (Bute until 1974 Ayr until 1981)
SK Inverness
SL Dundee (Clackmannanshire until 1974)
SM Carlisle (Dumfries until 1981)
SN Dundee (Dunbartonshire until 1974)
SO Aberdeen
SP Dundee
SR Dundee
SS East Lothian (Haddingtonshire until 1921 Aberdeen until 1974)
ST Inverness
SU Glasgow (Kincardineshire until 1974)
SV Kinross-shire (until 1974), subsequently unused
SW Carlisle (Kircudbrightshire until 1974 Dumfries until 1981)
SX Edinburgh
SY Midlothian (until 1974), subsequently unused