Here is a list of some leading national suppliers of coloured nylon hoses in the United Kingdom presented in Markdown format:

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Leading National Suppliers of Coloured Nylon Hoses in the UK

1. Hosemasters Ltd.

   • Specializes in a variety of hoses including nylon options.
   • Offers customization for different industries.

2. Hose and Fitting Supplies Ltd.

   • Supplies a wide range of hose products, including coloured nylon hoses.
   • Known for their extensive inventory and quick delivery.

3. Parker Hannifin UK

   • A prominent player in hoses and fittings, including nylon.
   • Offers high-performance solutions across multiple sectors.

4. Ramex Ltd.

   • Provides a selection of nylon hoses with various colour options.
   • Focused on quality and customer service.

5. Aflex Hose Ltd.

   • Offers innovative solutions in hose assembly, including coloured nylon hoses.
   • Known for their expertise in flexible hose systems.

6. RS Components

   • A major supplier of electrical, electronic, and industrial components, including nylon hoses.
   • Provides a wide range of products for various applications.

7. Direct Hoses Ltd.

   • Supplies hoses of various types, including coloured nylon.
   • Known for competitive pricing and rapid service.

8. BSS Industrial

   • A leading supplier of pipeline and heating solutions, including hoses.
   • Offers an extensive range of products catering to different sectors.

9. The Hosemaster

   • Specializes in providing a wide selection of hoses, fittings, and accessories.
   • Focuses on customer satisfaction and tailored solutions.

10. Flextec Ltd.

    • Offers a comprehensive range of polymer hoses, including coloured nylon.
    • Known for innovation and product development.

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Please note that supplier availability and product offerings can evolve over time, so it's recommended to verify the latest information with the companies directly.