Here is a list of leading national suppliers of model making in the United Kingdom:

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Leading National Suppliers of Model Making in the UK

1. Hobbycraft

   • Website: hobbycraft.co.uk
   • Overview: A popular chain that offers a wide range of arts, crafts, and hobby supplies, including model making materials.

2. Modelsport UK

   • Website: modelsport.co.uk
   • Overview: A specialist supplier of model kits and accessories, particularly focused on radio-controlled models.

3. The Modeling Workshop

   • Website: themodelingworkshop.co.uk
   • Overview: Offers a variety of model kits and supplies, along with expert advice on model making techniques.

4. BMM Models

   • Website: bmmmodels.com
   • Overview: Supplies a wide range of plastic model kits, tools, paints, and accessories.

5. Partworks

   • Website: partworks.co.uk
   • Overview: Known for subscription-based model kits, especially vehicle and engineering models.

6. Eddies Models

   • Website: eddiesmodels.com
   • Overview: A well-regarded online store with a variety of model kits, paints, and accessories for hobbyists.

7. Hannants

   • Website: hannants.co.uk
   • Overview: Specializes in model aircraft, trains, and military models, offering a broad selection of kits and aftermarket products.

8. Scale Model Shops

   • Website: scalemodelshops.co.uk
   • Overview: A directory of model shops in the UK, providing links to various local retailers.

9. Smiths Models

   • Website: smithsmodels.com
   • Overview: Offers a large selection of scale model kits, tools, and supplies both in-store and online.

10. Hobby Box

    • Website: hobbybox.co.uk
    • Overview: A retailer that provides materials for various model making projects, with a focus on hobbyist needs. ```

Please note that the model making landscape can change, so it is beneficial to verify the current status of these companies and their offerings.