GST used to offer to facilitate degrees through a South African University. They seem to have re-tooled and now offer only a PhD by research through an accredited Dutch University (Theological University of Apeldoorn). Apeldoorn issues the degree. The fee is 5,000 £ plus an annual registration fee of 100 £ or so. If the fee is for the entire PhD that is an excellent cost. https://www.theology-gst.com/doctoral-degree/
The prospectus says the PhD certificate (diploma) will be in Latin with an English translation included. A PhD is projected to take 5-6 years.
It's encouraging that the Dutch partner university also describes the program on their web site: https://www.tua.nl/en/research/phd-studies-by-the-greenwich-school-of-theology
I've looked at this program for several years (even when they were partnered with North-West). I intend on applying in November.