Best Replacement Under Sink Water Filters Deals Online in the UK (10 Deals Found)

Last Updated - 16/08/2026 Sort By:

Best Choice
Waterdrop

New
Waterdrop RF10 Filter, Replacement for 10UA/10UB Under Sink Water System
【Compatible model】Compatible Replacement Filter for Waterdrop 10UA under sink water filter system, 10UB under sink water

£32.99
Aqua Quality

New
Aqua Quality Water Filter, In Line, 3 Pack - Also Suitable for Fridge, Under Sink, Plumbed in Water Cooler, NSF/ANSI 42
You are purchasing a pack of 3 x Aqua Quality In Line Fridge Water Filters, compatible with many different fridges and u

£14.99
Best Value
BRITA

New
BRITA P1000 replacement filter cartridge for BRITA filter taps - 1 Pack - reduces chlorine, limescale and impurities, Wh
Great tasting water straight from the tap: The P1000 reliably reduces chlorine and other taste-impairing substances from

£35.99 £37.99
FRIZZLIFE

New
Frizzlife M3005 Upgraded Anti-Scale Replacement Filter Cartridge Set (4 Pack) for SK99,SP99,SK99 NEW and SP99 NEW Under
Frizzlife M3005 Upgraded Anti-Scale Replacement Filter Cartridge Set (4 Pack) For SK99,SP99,SK99 NEW and SP99 NEW Under

£63.99
PUREPLUS

New
1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont
❄️【Authoritative Certifications】 - The filter is certified against NSF/ANSI 42 by IAPMO, filtering out 99% Chlorine, odo

£18.99
Water Gem

New
Water Gem Under Sink Filter System Replacement Inline Filter | Kitchen Tap Water Filter Cartridge | Universal 3/8" Male
Filtered Water on Tap: Water Gem ensures a steady supply of perfectly filtered water directly from the tap, when ever yo

£40.95
AquaHouse

New
3X AquaHouse 10" Carbon Block CTO Water Filter Cartridges for Drinking Water, Reverse Osmosis Systems, fits All 10" Filt
3x AH-CTO5 AquaHouse 10" Carbon Block water filter cartridges, fits all standard 10" water filter housings (cartridge di

£15.99
Aqua Quality

New
Aqua Quality Under Sink Replacement In Line Water Filters | Also suitable as a replacement for External Fridge Water Fil
This universal fridge filter is a compatible replacement for any refrigerator using an EXTERNAL water filter cartridge w

£8.79
Waterdrop

New
Waterdrop RF10-UF Filter, Replacement for 10UA/10UA-UF/10UB/10UB-UF
【Compatible model】Compatible Replacement Filter for Waterdrop 10UA under sink water filter system (ASIN B083NPW1DN), 10U

£39.99
iSpring

New
iSpring FC15 5 Micron 10" Replacement CTO Carbon Block Water Filter
Protect Your Family and Household Appliance from Chlorine and More: Say goodbye to smelly, bad tasting water! The FC15 c

£10.99

10 Replacement Under Sink Water Filters deals are available from: Amazon stores, starting from £8.79.
The biggest discount we found is 5% on BRITA P1000 replacement filter cartridge for BRITA filter taps - 1 Pack - reduces chlorine, limescale and impurities, White at Amazon.
The lowest price we found is £8.79 while the highest is £63.99.
Prices for the best Replacement Under Sink Water Filters deals average at £28.37.
Last updated on August 16, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Replacement Under Sink Water Filters.