It's a 'training' position in name only. It is done this way to get around the racial discrimination that it is. It is a job paying £20,000.00 a year for a company that is obsessed by race and gender over individual worth.
They are not even discriminating against a particular ethnicity, they are discriminating against a particular skin-pigment. White. This means no English, Scottish, Irish, Australian, New Zealander, Canadian, South African, Zimbabwean, French, Dutch, German, Belgian, and anyone from any culture or country in the entire world that just happens to have a white skin pigment.
Now these studies that apparently prove that diversity creates economic benefits. Is this just diversity of skin colour or is it actually a diversity of thought, experience and values? Just because you have a different skin colour than someone else does not mean you think differently.
What has more diversity between them?
Two kids from intact families, from similar socio-economic status, both going to privates school in the UK but one is black while the other white?
Or two kids. Both having white skin pigment, one from the same situation as above and the other from Durban, South Africa, This kid from a broken family, having to be the man of the house from the age of 14 when his father disappeared. The family dirt poor, living integrated in a predominately black community. This kid growing up, fluent in Zulu but at the time where Mandela looked likely to come to power they had to retreat from the community to a farm with their uncle with supplies and guns awaiting the inevitable murder of all of the white folk (fear of what might happen at the thought of an over-representation of white folk amongst the living). Thankfully they got through all of that and through working hard and going through the military this kid was able to get himself over to the UK.
Super extreme example for sure, I actually know this Saffa and its a hell of a story. But what is the real honest point of needing different skin colours? If they want genuine diversity they could flesh this out in the interview or the advert, asking for someone who has overcome prejudice and great challenges in their life, someone who has experience or an understanding of different cultures or can speak multiple languages?
Or is it just plain optics? Hitler had an optic plan too of course. What about a very pale skinned Maori?
Would they be eligible? Surely there is a better way of getting this level of shallowness into your hiring potentials without putting up a sign that says 'non-whites only'.
There are people out there who genuinely believe that a persons thoughts & values are entirely dependent on their skin colour, they fall into two categories Social Justice Warriors and the Alt-Right. Two sides of the same bigoted coin.