Here is a list of leading national suppliers of arched curved aluminium profiles in the United Kingdom:

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Leading Suppliers of Arched Curved Aluminium Profiles in the UK

1. Aluminium Warehouse

   • Website: www.aluminiumwarehouse.co.uk
   • Overview: A leading online supplier of aluminium products, including bespoke and standard curved profiles.

2. Aluminium Extrusions

   • Website: www.aluminium-extrusions.co.uk
   • Overview: Specializes in a wide range of aluminium extrusions, including custom curved solutions.

3. Capral Aluminium

   • Website: www.capral.com.au
   • Overview: Engaged in the supply of aluminium products, offering curved profiles for various applications.

4. Kawneer UK

   • Website: www.kawneer.co.uk
   • Overview: A leading manufacturer of architectural aluminium building systems, providing custom solutions including curved profiles.

5. Aalco

   • Website: www.aalco.co.uk
   • Overview: One of the largest independent stockholders of aluminium products in the UK, with capabilities for custom bending and profiling.

6. Alumet

   • Website: www.alumet.co.uk
   • Overview: Supplies a wide range of aluminium products and offers services for bespoke curved profiles.

7. Metal Solutions

   • Website: www.metal-solutions.co.uk
   • Overview: Specializes in custom metal fabrication, including curved aluminium profiles for diverse applications.

8. Aluminium Profiles

   • Website: www.aluminiumprofiles.co.uk
   • Overview: Offers a wide variety of aluminium profiles, including arched and curved designs.

9. Bend-All

   • Website: www.bend-all.co.uk
   • Overview: Experts in bending and fabrication of aluminium, providing custom curved profile services.

10. Aluform

    • Website: www.aluform.co.uk
    • Overview: Supplies a variety of custom and standard aluminium products, including arched profiles.

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Please note that the market for these products can evolve, and it's beneficial to check the latest offerings and capabilities of these companies.