That looks like it me just the job. Hopefully the supplier will respond in kind to my request for some tech support and suggest the same product. Presumably in my set-up (I have 2 dimmed lighting circuits, one with 6 and one with 8 LEDs) I would need one regulator for each switched bank?

Just to report back, these gadgets have done the job so thank you to all contributors.

Have a nice day.
Jon