While politicians debated a points-based system for immigrants in the early 1970s, Scarfolk went a step further and introduced a similar system for existing citizens.
The council didn't see why it should be burdened with unimportant, objectionable people.
Surprisingly, many citizens had never even entertained the idea that their country of birth was purely accidental and that their value to society might be lower than that of a pack of disposable nappies or a plate of tripe*, nevermind better educated, more civilised foreigners.
Between 1972 and 1976 thousands of British citizens were deported to an immense raft which floated five miles off the coast of Blackpool. Realising that they were now the foreigners they had previously denigrated, the deportees hurled racist abuse at themselves and each other and frequently got into fights.
* see Citizen Values for further details.