- Santander - Wakefield
- Santander - Walkden
- Santander - Wallasey
- Santander - Wallington
- Santander - Walsall
- Santander - Walthamstow
- Santander - Walton-on-Thames
- Santander - Walworth
- Santander - Wandsworth, Erasmus House, Roehampton University, Roehampton Lane, Digby Stuart Drive
- Santander - Wanstead
- Santander - Ware
- Santander - Warrington
- Santander - Washington
- Santander - Waterlooville
- Santander - Watford, 249, St Albans Rd
- Santander - Watford, 26, The Parade, High St
- Santander - Wealdstone
- Santander - Welling
- Santander - Wellingborough
- Santander - Wells
- Santander - Welwyn Garden City
- Santander - Wembley, 223, Preston Road
- Santander - Wembley, 514, High Road
- Santander - West Bridgford
- Santander - West Bromwich
- Santander - West Ealing
- Santander - West Kirby
- Santander - West Thurrock
- Santander - West Wickham
- Santander - Weston Super Mare
- Santander - Wetherby
- Santander - Weybridge
- Santander - Weymouth
- Santander - Whetstone
- Santander - Whitehaven
- Santander - Whitley Bay
- Santander - Wibsey
- Santander - Wickford
- Santander - Widnes
- Santander - Wigan
- Santander - Wigston
- Santander - Willerby
- Santander - Wilmslow
- Santander - Wimbledon
- Santander - Wimborne
- Santander - Winchester
- Santander - Windermere
- Santander - Windsor
- Santander - Winton
- Santander - Wisbech
- Santander - Wishaw
- Santander - Witney
- Santander - Woking
- Santander - Wokingham, 12, Broad Street
- Santander - Wokingham, 26-28, Market Place
- Santander - Wolverhampton
- Santander - Wolverhampton, Santander University, Santander Bank PLC, Room MD085a/ MD086, City Campus South, University of Wolverhampton, Wulfruna Street
- Santander - Wood Green, 28, High Road
- Santander - Wood Green, 67, High Road
- Santander - Woodley
- Santander - Woolwich
- Santander - Worcester
- Santander - Worcester Park
- Santander - Workington
- Santander - Worksop, 33, Bridge Place
- Santander - Worksop, 40-42, Bridge Street
- Santander - Worthing, 37, Chapel Road
- Santander - Worthing, 37, Goring Road
- Santander - Wrexham