Come September 5, the UK will either get its first prime minister of colour or third woman prime minister. The decision will be made by 180,000 or so Conservative Party members, 97 per cent of whom are white.

Come September 5, the UK will either get its first prime minister of colour or third woman prime minister. The decision will be made by 180,000 or so Conservative Party members, 97 per cent of whom are white.