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City Tanks - Small Water Tank


Totally Internally Flanged

A City Tank is an ideal solution for project locations with restricted access.

City Tanks are a water tank that are ideal for restricted spaces, including: 

  • Basement plant rooms
  • Roof installations
  • Attic Spaces

Benefits of TIF tanks in city developments where water tank is essential

  • Less space required – space saving (installed at wall or corner)
  • Maximise floor space
  • Access restricted
  • Delivery issues – palletised easy to deliver
  • Quick assembly timelines
  • Any volume of water
  • Fully customisable to space available (L/W/H)
  • Customisable shape configurations (T-Shape, L-Shape)
  • Insulated and non-insulated options
  • Replacement, refurbishment and new tank options



Uninsulated Water Tanks

Uninsulated Water Tanks are used for the storage of process water. Process water is the name for water which is classed as non-drinking water, not suitable for human consumption. Process water is used for a wide range of applications including industrial plants, industrial processes and production facilities. production companies, heat and power plants, technical plants.

Insulated Water Tanks

Insulated Water Tanks are supplied with suitable connections in compliance with WRAS for storage of potable water. Potable storage water is water that has been certified safe for human consumption, these types of tanks are used in commercial and domestic applications. Insulated attic tank for homeowners, insulated sectional tanks for larger volumes of water required in hotels, restaurants, creches, theatre, etc.

Download our TIF base details.


Location: Four Seasons Hotel at Park Lane, London
Tank Size: 2.5m x 1.5m x 1m
Solution: Hand Lay Up Totally Internally Flanged Tank

This tank is placed in an alcove archway under the pavement in London city centre. Pedestrians walk over the top of it every day without
realising it. Space restrictions was a major factor in this project. The space allocated for the water storage tank was minimal, and the hotel needed to store as much potable water as possible. To capitalise on the space allocated, we designed and manufactured a HLU Totally Internally Flanged tank that could be placed against three walls. As all of the tank bolts are internal, access to the tank was only needed on one side.

totally internally flanged water tank installation


Location: Edinburgh
Tank Size: 1.7m x 0.7m x 1.7m
Capacity: 1770 litres
The existing tank was positioned in a tight space within the roof. The customer required a tank of similar size and had no other option to locate the tank anywhere else in the building. Our new tank measured 1.7m L x 0.7m W x 1.7m H and had a nominal capacity of 1,770 litres. The tank was assembled against three walls, the design allowed 500mm of space above the tank for future maintenance and adequate crossflow. The client thought it couldn’t be done but NP LTD managed to design a very similar sized CITY TANK to fit neatly into that space. Our highly trained install crew built the tank within this very restricted area and manoeuvred all required panelling through a narrow access hatch.

Water Tank


Totally internally flanged tank


Why work with us for your Water Storage Needs?

Over 50 years’ industry experience

Projects completed in the last 24 months

Tricel Lanark 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.


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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.


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bsi member cert
Certified ISO company
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chas accredited contractor
safe contractor approved
Case studies
Motorpoint arena water tank installation project
Heathrow Airport water tank installation project
Tannadice Stadium Image
Heathrow Airport water storage tank installation completed by Tricel Lanark