well i think whoever was in government tories or labour this would have happened as the money men believe in the adam smith philosophy of increasing the population to make more money, has immigration lessened under the tories ? nope its actually increased. just the other day they they made it easier for the chinese to enter the uk
multi culturalism started under the tories in the 1950s and i think when i find the figures immigration from the sub continent dropped during the 2000s.