After 16 years I have moved this site to a new host. The old host provided excellent support but had clearly moved away from webhosting, so it seemed like a good time to pull up stakes and move to a host that was actually focused on webhosting.
From the user’s perspective (both of you), nothing has changed, this is all backend stuff.
The process of moving was very simple, I never even had to post a blinking “Under construction” sign, though I really wanted to, and will do so now: