Aquarium specialists in Middlesex, Surrey, Hertfordshire and surrounding area’s.

If you are looking for aquarium specialists who can install or maintain your aquarium, call Underwaterworld in Northwood or Watford.

Our Services




Fish & Coral

Bespoke built aquariums

We are renowned for installing bespoke aquarium tanks for homes, offices, hospitals, retail outlets, bars and hotels. We also rent and lease out aquariums to private residences, corporate businesses and the film industry. We have a variety of fishes kept in the best condition. The fish stock is inspected regularly by the environmental services and can be viewed by appointment only.

Why choose us?

  • Our aquariums are custom designed to your needs
  • We are dedicated to keeping the marine life of your aquarium to its best condition
  • We are regularly inspected by the environmental services
  • We supply a wide range of products, including aquarium tanks, fish food, coral and fishes
  • Aquarium maintenance

    You can depend on us for high-quality aquarium maintenance. We can generate the best environment inside your aquarium for the marine life to sustain and thrive! Our experts are extremely flexible and will tailor the installation and maintenance services around your schedule. We’ll ensure that there is minimal or no disruption to your everyday routine.

    Looking for aquarium specialists?

    Established in December 2003, Underwaterworld specialises in installations and maintenance of all types of aquariums, including cold water, freshwater, tropical, and saltwater. We can also work on marine fish only systems and marine reef tanks. Based in Northwood, we serve clients throughout the M25 area, including Watford and Ruislip. We have recently started global operation and are happy to have numerous happy global clients.

    We supply fish tanks, fish food, fishes, corals and much more. Delivery service is available for customers based in the M25 area. All our services are tailor made to the individual requirements, and we are available 24 hours for emergency call-outs.

    Buy premium quality aquarium tanks from Underwaterworld. Call us on