1. 1962: Commonwealth Immigration Act (Macmillan, C) - entry depended on employability (voucher system)
2. 1964-70: Labour set low voucher quotas (because of electoral losses)
3. 1968: Commonwealth Immigration Act (Wilson, Labour) entry limited to British citizens with (grand)parents born in UK (because of influx of Kenyan Asians)
4. 1971: (Heath, C) Immigration Act, vouchers replaced by work permits with temporary residence
5. 1981: British National Act (Thatcher, C)