District level RSI analysed on PCA, theta is tan-1(b3/b2) 1=cheapest districts nationally <£1300/m2 10=prime central london >£18000/m2 31-39 are 4 NUTS regions split into price quintiles, purple=london 23-26 are currently-equal-£/m2 but varing 'desirability'=£/m2 relative to neighbours

cycle

X(n=1:10,k=2,3) residential property index, cyclical component

£/m2, performance, and the ripple effect

A method for reducing the residual component implicit in PCA factors is proposed