I got a range of quotes via the Martin Lewis site, cheapest for me (Annual worldwide miulti trip) was £179.82 from Admiral.
I find there’s very little difference between single trip and annual multi trip cover. One other thing I found, adding my kids to my policy worked out more expensive than getting them their own policies.
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!