Lords | Berufe
- Barone Leveson
- Barone Levingston
- Barone Lexington
- Barone Lilford
- Barone Lindsay of Balcarres
- Barone Lindsay of the Byres
- Barone Linton and Caberston
- Barone Lloyd
- Barone Loch
- Barone Loughborough
- Barone Lovat
- Barone Lucy
- Barone Ludquhairne
- Barone Luke
- Barone Lumley
- Barone Lurgan
- Barone Lyell
- Barone Lyttelton
- Barone Macdonald de Slate
- Barone Macdonald of Slate
- Barone Maltravers
- Barone Manny
- Barone Margadale
- Barone Mauchline
- Barone Maxwell
- Barone Mayhew de Twysden
- Barone Mendlesham
- Barone Methven
- Barone Middleton
- Barone Molines
- Barone Monk Breton
- Barone Monk Bretton
- Barone Montacute
- Barone Montagu
- Barone Montagu de Beaulieu
- Barone Montagu de Boughton
- Barone Montagu of Boughton
- Barone Monteagle
- Barone Montgomerie
- Barone Mordaunt
- Barone Mornington
- Barone Mortimer
- Barone Mount Stuart
- Barone Mountbatten
- Barone Mountjoy
- Barone Mowbray
- Barone Moyne
- Barone Mulgrave
- Barone Nairne
- Barone Napier