The UKs stagflation in the 1970s is decomposed into its causative fact
ors, using the Liverpool rational expectations model. It is found that
there was a large rise in the natural rate of unemployment, mainly du
e to rising union density; that fiscal and monetary shocks had little
effect on the resulting rise in unemployment; and the high inflation o
f the period was due to persistent and large fiscal deficits, with the
ir accompanying monetization. Mrs Thatcher inherited an inflation indu
ced by an ongoing deficit and a natural rate of over 2 million unemplo
yed.