Best Holding Tanks Deals Online in the UK (25 Deals Found)

Last Updated - 28/02/2026 Sort By:

Best Choice
Pond H2O

New
PondH2o Koi Pond Fish Measuring Tank, Pondfish Holding Vat, Ornamental Koi Carp Inspection Viewing Bowl, External Size i
Koi Fish Measuring Tank, Pond Fish Holding Vat

£47.95
Walex

New
Porta-Pak RV Marine Black Holding Tank Deodorizer Drop-Ins, Camper, Boat, Camping Cassette Toilet Cleaner Pods, Lavender
WASTE BREAKDOWN - Porta-Pak RV Marine Holding Tank Deodorizer breaks down waste and stubborn RV toilet paper, keeping yo

£21.57
Used
Thetford SC200 Cassette toilet holding tank 20063674
Thetford SC200 cassette, in good used condition.May need a new seal as it has been stored for a few years.Will be sent R

£63.10
Best Value
cantondz

New
cantondz Compatible with Thetford Toilet Cassette C250 C260 Spare Holding Waste Tank Mechanism Replacement 5072706
Fitments: Compatible with Thetford C250 & C260 SC250/260 Spare holding tank mechanism

£44.32
New
PORTA-PAK drop-in sachets (50) Welfare Units / Holding tanks / Portable Toilets
The PORTA-PAK drop-in sachets by Walex are a convenient solution for providing welfare units, holding tanks, and portabl

£44.38
Akozon

New
Akozon RV Water Storage Tank Leakproof Shockproof 8 Gallon Water Holding Tank for Trailer Boat Yacht
[Large Capacity] With a 130mm wide mouth inlet and double layer guard, this tank can hold 8 gallons of drinking water, p

£93.69
EIMSOAH

New
EIMSOAH 7 Gallon RV Water Storage Tank, Heat Cold Resistant Water PE Tank,RV Water Tank Thickened Drinking Water Holding
EFFICIENT FILLING: The inlet port diameter of 100mm makes it easy to fill the tank with water. Its compact make it easy

£63.89
New
2000L Collapsible Folding Round Koi Fish Holding Quarantine Show Tank Pond
These tanks are often used as quarantine tanks for fish before adding them to an aquarium or pond, preventing the spread

£327.99
MJP Supplies

New
Enduramaxx 1,100 Litre Dosing Tank Bund/Fish Holding Tank (Blue)
Water treatment

£457.20
New
Thetford Tank Blaster - Level Sensor Cleaner - Waste Water Holding Tanks Cleaner
The Thetford Tank Blaster Cleaner is a high-performance 2-in-1 solution formulated specifically forblack & grey water ho

£24.99
VHEUHZ

New
Toilet Cassette Mechanism Compatible with Thetford Cassette Toilet C250 C260 SC250 Spare Holding Waste Tank Mechanism 50
Toilet Mechanism Reference Fitments: Compatible with Thetford C250, C260, SC250

£44.18
Aramox

New
Aramox 8 Gallon Fresh Water Holding Tank for RV, Food Grade LLDPE Water Storage Container Tank Portable for Trailer Boat
Seamless Construction: Designed with seamless construction using LLDPE material, this 8-gallon RV fresh water storage ta

£73.02
New
Fenwicks 1L Waste Pipe & Tank Cleaner for Holding Tanks Pipework Toilet Caravan
Fenwicks Waste Pipe and Tank Cleaner 1L. Fenwicks Waste Pipe and Tank Cleaner cleans and freshens waste holding tanks, t

£10.52
Masyrt

New
Masyrt RV Fresh Water Tank,5 Gallon RV Fresh Water Tank with 100mm Large Inlet,Lldpe Fresh Water Holding Tank,Leak Proof
Versatile Application: The fresh water tank is suitable for a wide range of vehicles and outdoor activities, including R

£50.09
New
Fenwicks Waste Pipe And Tank Cleaner For Holding Tanks 1 Litre Caravan Motorhome
It is ideal for cleaning grey water systems, shower and sink drain pipes, and toilet cassettes. The powerful formula rem

£10.95
Jiawu

New
Jiawu 5 Gallon RV Fresh Water Tank, Water Jug Rectangular Water Container, LLDPE Plastic Hedpack with Sealing Cover, Tra
【Made for Your RV】This long haul water tank is specifically designed for RV and trailer camping. With a capacity to hold

£54.94 £59.55
New
THETFORD HOLDING WASTE TANK REPLACEMENT SPARE MECHANISM FOR C250 C260 TOILETS
Thetford Product Code : 5072706. Conversion Kits. Conversion Kits (48). Need help?. Goods must be new, unused and in res

£47.99
New
PORTA-PAK drop-in sachets (50) Welfare Units / Holding tanks / Portable Toilets
One sachet will break down waste, paper and deodorize for up to one week. PORTA-PAKdrop in sachets FROM VAN COMFORT. Sui

£49.50
New
2x Odourlos Toilet Tank Chemical Treatment Holding Tank Motorhome Caravan 2L
2X JABSCO ODOURLOS 1L. 40ml to every 90 litres of holding tank capacity. Does not contain formaldehyde and is 100% biode

£37.90
New
Thetford C250/260 Holding Tank Float Magnet Upgrade. AVOID LATE RED LIGHTS!!!!
In a test with water the upgraded magnet reliably gave an indication 3 litres earlier than the Thetford magnet. The floa

£4.45
New
THETFORD COMPLETE C250/260 HOLDING TANK – Caravan / Motorhome 5070006
Complete Waste Holding Tank Includes wheels and a pull-out handle. Colour: Grey/Orange Capacity: 17.5Ltr Thetford Part N

£215.00
New
WEMA HOLDING TANK SENDER UNIT 410mm 16" Waste Black Water Toilet Sensor HTS410
Wema Holding Tank Sender Unit. All stainless steel sender body with special protective cover for holding tanks. Connecti

£80.00
New
Tank Blaster - Level Sensor Cleaner - Black & Grey Waste Water Holding Tanks & P
Active enzymatic blend blasts crud and attacks tissue, waste, and grease. Cleans overnight - then just dump and go. The

£23.97
Used
Koi Breeding , Fish Quarantine Set Up , IBC . Holding Tank. All pond solutions
I have my koi holding tank with pump and filter for sale . I used this for growing on smaller koi before they went in th

£104.70
New
1000L Collapsible Folding Round Koi Fish Holding Quarantine Show Tank Pond
These tanks are often used as quarantine tanks for fish before adding them to an aquarium or pond, preventing the spread

£277.33

25 Holding Tanks deals are available from: Amazon, eBay stores, starting from £4.45.
The biggest discount we found is 8% on Jiawu 5 Gallon RV Fresh Water Tank, Water Jug Rectangular Water Container, LLDPE Plastic Hedpack with Sealing Cover, Trailer Emergency Water Holding Tank 15.8 X 9.8 X 7.9 Inch at Amazon.
The lowest price we found is £4.45 while the highest is £457.20.
Prices for the best Holding Tanks deals average at £90.94.
Last updated on February 28, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Holding Tanks.