- Santander - LONDON CITY, 224, Bishopsgate
- Santander - LONDON CITY, Regina House, 69, Cheapside
- Santander - LONDONDERRY
- Santander - Lanark
- Santander - Lancaster, 28, Penny Street
- Santander - Lancaster, Alexandra Square
- Santander - Largs
- Santander - Larne
- Santander - Launceston
- Santander - Leamington Spa
- Santander - Leatherhead
- Santander - Leeds, 28, Austhorpe Road, Crossgates
- Santander - Leeds, 58/60 Briggate
- Santander - Leeds, 59-61, Station Road, Crossgates
- Santander - Leeds, LGF, Leeds University Union, Lifton Place
- Santander - Leicester, 114, Melbourne Rd
- Santander - Leicester, 125, Belgrave Road
- Santander - Leicester, 2, Fletcher Mall, Beaumont Leys
- Santander - Leicester, 2/4, Haymarket
- Santander - Leicester, 256, Narborough Road
- Santander - Leicester, 80, Woodgate
- Santander - Leicester, Percey Gee Building, Universit
- Santander - Leicester, Permanent House, Horsefair Str
- Santander - Leigh
- Santander - Leigh-on-Sea
- Santander - Leighton Buzzard
- Santander - Leominster
- Santander - Lerwick
- Santander - Letchworth
- Santander - Lewes
- Santander - Lewisham
- Santander - Leyland
- Santander - Leytonstone
- Santander - Lincoln
- Santander - Linlithgow
- Santander - Lisburn
- Santander - Liskeard
- Santander - Liverpool, 17, Allerton Road
- Santander - Liverpool, 45, Lord Street
- Santander - Liverpool, 539, Prescot Road
- Santander - Liverpool, 83, Walton Vale
- Santander - Liverpool, Block 1, Peach Street, Brownlow Hill
- Santander - Livingston
- Santander - Llandrindod Wells
- Santander - Llandudno
- Santander - Llanelli
- Santander - Llangefni
- Santander - Lockerbie
- Santander - London, Goldsmiths University, New Cross, 181a Richard Hoggart Building
- Santander - London, London School of Economics University, Kings Chambers, 29-31 Portugal Street
- Santander - London, Northampton Square
- Santander - London, Part Ground Floor, Christopher France House, Westfield Student Village, Queen Mary University of London Campus, Westfield Way
- Santander - London, UCL University, South Wing Building, 1-19 Torrington Place
- Santander - London Bridge
- Santander - Long Eaton
- Santander - Loughborough, 63, Market Street
- Santander - Loughborough
- Santander - Loughton
- Santander - Louth
- Santander - Lowestoft
- Santander - Ludgate Circus
- Santander - Lurgan
- Santander - Luton
- Santander - Lymington
- Santander - Lytham St Annes, 54, St Annes Rd West
- Santander - Lytham St Annes, 75, Clifton Street