Yes – I can vouch for most of those already named, as ones I have used. Most of my insert-tooling is from JB.
Also…
Tony Griffiths' excellent Lathes.co site, for information, manuals and accessories, and its second-hand ads section .
ToolStation – possibly more useful for engineering than is Screwfix, but I have used both. Among other things, TS stocks limited ranges of bandsaw blades, arc-welding rods and MIG wire, quite a wide range of metric fastenings and PPE.
Modelfixings is aimed particularly at our model boats and planes brethren, but is very good for small-diameter, mainly but not only metric, fasteners and many other items for physically-small work.
Bearings R Us – transmission products.
Newton-Tesla has sold me no less than four 3ph-motor and VFD drive sets. (For my Myford 7, Harrison L5, Myford VMC mill and BCA jig-borer) –
– while the mill also sports an Allendale's (Machine-DRO) 3-axis DRO set.
Locally, Townsend Bearings, in Bridport (W. Dorset) stocks or are agents for a wide range of engineering items and consumables, but unfortunately the shop catalogue on its web-site seems have been broken for quite a while. It also offers a shot-blasting and plastic-coating services to private and trade customers.
Not far from Townsend's, is Bridport Foundry, who now produce the Stuart castings.
Cutwel – cutting-tools. I thought when I first found their name that this is a trade-only firm (as RS used to be), and indeed most of its range is for modern industrial, CNC-led manufacturing; but I have seen it recommended by other users on this forum.
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It's also interesting to see what's available for at least workshop even if not necessarily model materials, from retailers outside of the obvious.
E.g. building hardware (studding, brackets various, etc.) .
The flexible "conduit " adding protection to my mill's DRO signal cables are lengths of caravan sink waste-hose from a camp-site shop (normal service temporarily suspended): I needed that diameter, about 32mm, to thread the sensors through. The saddle-clips made for that tube hold it to the machine. I think the same shop also sells medium-diameter copper tube and fittings, for caravan gas-fitting, but potentially useful for larger-scale steam models; plus a fair range of awning-pole and other materials that with a little imagination…
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