Two great sites worth considering if your a supplier or a designer looking for new suppliers.
Supplier Source – Allows designers, engineers or suppliers to search for new (or existing) contacts. Most are SolidWorks users. Our entry is here.
Fabbers Market – Designers can source, qualify and obtain quotes from suppliers who can fabricate and manufacture their designs, and enables suppliers to promote their services and win new business. Our entry is here.
Both have space for a portfolio and list of capabilities. A few more UK companies siging up would help though….