Water Storage Tanks – The UK’s Leading Provider

Manufacturing & Supplying GRP Cold Water Storage Tanks Since 1968

A large water tank with external ladders

✓ High-quality manufacturing of cold water storage tanks

✓ Approved to British Standards

WRAS approved

✓ Designed for both potable and non-potable water storage

✓ Water storage tanks that can be bought off the shelf or

Custom built to your specifications.

Replacement water tanks & Site Visits Available

GRP Cold Water Storage Tanks

We specialise in GRP manufacturing which offers our customers the highest quality in cold water storage tanks.

Our range of GRP Cold Water Tanks includes Domestic Water Tanks, Industrial Water Tanks, Agricultural Water Tanks, & Commercial Water Tanks.

We supply all GRP water tanks across the UK. For replacement cold water storage tanks our team offers advice & site visits if required to meet individual project requirements.

NP Logo - Cold Water Storage Tanks

are now supplying


Tank & Booster Set
Water Pressure Solution

Cold Water Storage Tanks Solutions

large outdoor sectional tank

Sectional Water Tank

✓ Highest quality standard

✓ Bespoke design

✓ UV stabilised materials

✓ WRAS approved

A combined tank and pump station installed for Emtec

Combined Tank & Pump Station

✓ Very Compact

✓ Professional enclosure

✓ GRP material

✓ Corrosion resistant

A Nicholson Plastics One Piece Tank

One Piece Tank

✓ Bespoke design

✓ Virtually ZERO maintenance

✓ Can be supplied in any BS5252 or RAL colour

✓ WRAS approved

A Nicholson Plastics GRP Break Tank

Break Tanks

✓ Available from a standard range

✓ Pre-insulated tanks

✓ Standard capacities are available

✓ WRAS approved

A Two Part Water Tank

Two-part Tanks

✓ Manufactured to order

✓ Available with insulation in varying thicknesses

✓ Fully self-draining

✓ WRAS approved

A One Piece Tank.

Category 5 Tanks

✓ Used for multiple applications

✓ UV stabilised materials

✓ WRAS approved

✓ Type AB – Air gap

A City (TIF) Tank ready for installation.

City Tanks

✓ Maximise availalable floor space

✓ Quick assembly timelines

✓ Any volume of water

✓ Customisable shape configurations

A 1x1x1m Cube Tank sitting on a pallet

Cube Tanks

✓ Self-Assembly (1x1x1 meter panels)

✓ Easy access for restricted spaces

✓ Can be assembled against three walls

✓ Easy to transport on one pallet

Why work with us for your Water Storage Needs?

Over 50 years’ industry experience

Projects completed in the last 24 months

Nicholson Plastics is a UK GRP Cold Water Storage Tank Manufacturer with a proven track record in the supply of water tanks to all industry sectors throughout the UK. We have an expert team on hand with over 50 Years' industry experience. Our team works hard to provide exceptional industry lead times from quotes, site visits, order processing, and delivery. We are a British Standard approved company with full certification through BSI/ISO9001 including WRAS approved certified water tanks suitable for potable drinking water.

  • Over 50 years of technical knowledge.
  • Quality assurance at a local level.
  • UK customer support teams, backup, replacement service & advice.
  • Supporting local and sustaining UK manufacturing.
  • Regional sales representatives for site visits, emergency water requirements, and project advice.


Data Centres


Government Buildings


Our Accreditations

At Nicholson’s, we pride ourselves in manufacturing and installing GRP water tanks of the highest quality throughout the UK. Click to see Our Certifications.


construction line logo
bsi member cert
Certified ISO company
cpd member logo
chas accredited contractor
safe contractor approved
NP Webstore - Water Storage Tanks


NP Webstore - Cold Water Storage Tanks

Our Team Tank Care+ Service for your Cold Water Tanks

Our support team is on hand to answer all your water tank queries. Call, email or talk to us via our webchat today. Track your order, general enquiries, water storage tank specifications, request a quote or just give us feedback.

Our team has over 50 years of experience in providing GRP cold water tank solutions to our customers across all industry sectors throughout the country.

We are happy to help, get in touch!


Team Tank Care - Water Storage Tanks