Hi Kungu, I had a word with them on a Twitter and they said it is something they may see more of in the future..... so I'm assuming it will be open for the next few years.
5 GCSEs at Grade C or above, including English Language, Mathematics and a Science (single or double award), excluding General Studies.
either 3 A-Levels at Grades BBC or above, excluding General Studies.
or an Honours Degree at 2:2 (or higher) or a pass (or above) in a higher degree such as MSc, MA, MPhil, DPhil, PhD, MBA.
If you have equivalent academic qualifications then you will be asked to provide a Letter of Comparability from UK NARIC before attending your first selection day. The Scottish educational qualification equivalents are detailed in the FAQ page.
I don't know what the schooling is like in Kenya but you would need equivalent qualifications, to those outlined, above.