Yep, that works.
I tired it before the previous post but thought it was a bit weird or bad practice to utilise /basket?action=add&id=products/category-name/product-name rather than the usual cleaner /basket?action=add&id=product-name
But no complaints, the cart works now.
Thank you very much for your help on this Sam.
Job done.
EDIT:
Sam, I just looked through the plugins archive on the forum – and only just discovered your own excellent work on Shopkit. Wow, that could have saved me a lot of time! It looks great, very comprehensive… I may well buy a license from you at some point soon.
All the best with it.