Lanarkshire County
 
Lancashire County
 
Lancaster Borough within Lancashire
 
Launceston (Dunheved) Borough within Cornwall
 
Leicester Borough within Leicestershire
 
Leicestershire County
 
Leominster Borough within Herefordshire
 
Lewes Borough within Sussex
 
Lichfield Borough within Staffordshire
 
Limerick Borough within Co. Limerick
 
Lincoln Borough within Lincolnshire
 
Lincolnshire County
 
Lincolnshire (Lindsey)
 
Linlithgow Burghs County
 
Linlithgowshire (West Lothian) County
 
Lisburn Borough within Co. Antrim
 
Liskeard Borough within Cornwall
 
Liverpool Borough within Lancashire
 
London County
 
Londonderry Borough within Co. Londonderry
 
Lostwithiel Borough within Cornwall
 
Ludgershall Borough within Buckinghamshire
 
Ludlow Borough within Shropshire
 
Lyme Regis Borough within Dorset
 
Lymington Borough within Hampshire