New research from Halifax bank tracking the last 20 years of UK housing show property prices have increased by 306 per cent. The average price has leapt to £121,742 from £29,993 since the Halifax house price index started in 1983. It says the north/south divide has widened significantly. Prices in London are now 76 per cent above the national average compared with 28 per cent in 1983. In Scotland prices are 59 per cent of the UK national average compared with 93 per cent 20 years ago.