Of course it has, 20 years ago it was no problem.
20 years ago I couldn't afford to sell my house in Yorkshire and buy one down here. The big difference for me in 2002 was the big redundancy payout and clearing my mortgage. Ned is young enough to take out a 25 year mortgage to get a house in Newhaven where prices are 60K below those in Brighton.
Not everyone in the south east is a professional or works in the city.