The article might be of interest. The webpage might be a resource. https://llm-guide.com/articles/whats-a-distance-learning-llm-really-like
You can't anywhere, as far as I know. These programs are for people who already hold a first degree in law, usually an LLB in Commonwealth countries or a JD in the USA.
Many UK and SA schools will allow students without a LLB or JD to enroll in LLM programs. The old-timers from AED will recall that our old friend Emir Mohammed earned the LLM from University of Strathclyde before his LLB from University of London.
I believe that there is an LLM offered by Oxford, concentrating on Human Rights Law, and there was at least some possibility of admission without a first law degree. I think though that you had to have some other impressive credentials to get in to the program. I don't know how common that is, to do an LLM with no first law degree.
If you think about it, American law schools essentially do the same thing when they offer a Master's level degree in Law for non-lawyers, and just rename it. In the DL sphere, Liberty University has a J.M. (Juris Master) program in either American or International Law where one doesn't need a first law degree. It seems to me to just be a retitled LL.M.
I am actually starting the J.M. in American Legal Studies at Liberty this fall since my employer is paying for the tuition. The selling point for me was the selections I can choose from the electives.