Refugee Crisis

The UK supreme Court - an institution so new that most Brits don't even know it exists- has ruled that homosexuals who face persecution in their country of origin may legitimately claim asylum in the UK.
This is, in effect, an extension to the 1967 convention on asylum, which  was an extension  of the 1951 convention - which was intended to deal with the problems of displaced people in Europe following World War II. Great oaks from little acorns grow.
There seems little doubt that the two men - one from Iran, and one from Cameroon - have been subjected to violence in their home countries. It also seems obvious that the ruling falls in line with the existing legislation. But what may be the unintended results of the ruling?
Firstly, it greatly increases the number of people entitled to stay in Britain, together with the amount of social and medical benefits they may claim. How many others could (theoretically) come? Take Cameroon alone. It has a population (at last count) of 18,879,301. Presume further that half of these are male. Let us assume that 1% of these are homosexual - that means that 94, 396 are potential residents of Britain (provided they can get over here in the first place to lodge their appeals). Sub-Saharan Africa as a whole is deeply hostile to gays.  Using the same reasoning, that means another 4,000,000 potential Brits. Of course, there is nothing to stop straight Africans pretending to be gay, and here another problem arises - how can the genuine articles be sieved out from the impostors?
This is a story which will run and run.