Here is a list of leading national suppliers of foundation bolts in the United Kingdom:

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Leading National Suppliers of Foundation Bolts in the UK

1. Boulton & Paul Ltd

   • Specializes in custom metal products including foundation bolts.

2. Fastenright Ltd

   • A prominent supplier of fasteners, including a variety of foundation bolts.

3. Screwfix

   • A major retailer of construction and industrial supplies, offering a range of foundation bolts.

4. Metric Bolt & Nut Co Ltd

   • Provides a wide range of bolts, nuts, and related products, catering to various industrial needs.

5. Fastenal

   • A global distributor of industrial supplies, including foundation bolts and fasteners.

6. Würth UK Ltd

   • Offers a diverse range of fastening products and solutions, including foundation bolts.

7. Bolts and Nuts Direct

   • Suppliers of a variety of bolts and fasteners for construction and industrial applications.

8. SENCO UK

   • A supplier specializing in fastening solutions, including bolts and hardware.

9. Heico Fasteners Ltd

   • Focuses on high-quality fastening products, including foundation bolts.

10. ArcelorMittal Construction UK

    • Provides a range of construction materials, including engineered fastening solutions. ```

These companies are known for their wide range of products and services in the field of construction and industrial fastening solutions. Please verify the latest information as the market may change over time.