Travel insurance provider with no residency requirement?

I have an upcoming trip visiting multiple countries in Africa and Europe and wondering if there is an insurance company or provider that doesn’t specific that I have to be a resident in a certain country?

Few years ago, I was living in the UK and had travel insurance by a UK-provider and had a positive experience with them. I have now moved back to my home country and the experience I had with the local travel insurance provider here isn't that good. Also, there aren’t many alternative travel insurance providers where I live. Unfortunately, it seems I cannot get insurance with the previous UK provider that I had as they specify that I have to be a UK resident (which I no longer am).