Overview: While the British government publicly operated an open-door policy to immigrants, in private it was terrified about the growing black population. Documents released under the 30-year rule and obtained by Timewatch reveal the government's true concerns were for interbreeding and therefore diluting the essential British character, rising crime, and health problems as immigrants came from colonies riddled with disease. Jonathan Dimbleby hosts a debate with representatives from the government and civil service in the 50s and 60s including Enoch Powell and John Bean, a founder member of the British National Party.