Here is a list of leading national suppliers of used hand tools in the United Kingdom:

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Leading National Suppliers of Used Hand Tools in the UK

1. eBay UK

   • An online marketplace offering a wide variety of used hand tools from various sellers.

2. Gumtree

   • A classifieds website where individuals sell used hand tools locally.

3. Toolstation

   • While primarily a new tool supplier, they also have a selection of refurbished and second-hand tools.

4. Screwfix

   • Similar to Toolstation, they offer some refurbished products, including hand tools.

5. London Tool Company

   • Specializes in buying and selling used hand tools, particularly focusing on tradesmen.

6. HSS Hire

   • Primarily a rental company, but they do have a selection of used tools for sale.

7. Wickes

   • A DIY retail company that occasionally features second-hand tools on their site.

8. Mac Tools

   • Offers a selection of used hand tools, catering to professional tradespeople.

9. Machine Mart

   • While focused on new equipment, they sometimes have used tools available.

10. Local Tool Resellers and Pawn Shops

    • Various local businesses sell used hand tools, though they may not have a national presence. ```

This list includes a mix of online platforms and companies that deal in both new and used tools, as the market for used tools can often span various channels.