Richard Harden runs both Tom's Modelworks and WEM. There's a post some ways down the page from this one by Felix Bustelo:

https://members.boardhost.com/Warship/msg/1793190188.html

In it, Richard posts in with the link. Here's his reply:

https://members.boardhost.com/Warship/msg/1793387314.html

The colors offered are listed. Yes, they're enamel.

James Duff indicated Keith Richardson still owns them, but his website doesn't work, and Facebook indicated the reason is because he had a stroke. So, I have no idea how you order overseas. In the US, Richard is the authorized supplier, and you've got the link.

The chemicals in enamel paint are considered hazardous, so most (if not all) mail services will not handle them. That means another courier service would be used. IIRC, you're in Canada? Richard is the final word, but there could be issues getting them to you, just so that doesn't surprise you if it happens. One reason Richard Harden became the US supplier is because they could not be shipped retail from the UK overseas, so they ended up being sold by authorized retailers in various countries. Hazardous chemicals "don't cross borders easily."