The author describes results obtained by using a new methodology to estimate potential output for the United Kingdom. The estimation method, which follows Rennison (2003) and Gosselin and Lalonde (2002), shows that combining the use of a Hodrick-Prescott filter and a structural vector autoregression (SVAR) is optimal to estimating potential output. Using this method, the author estimates two components of U.K. potential output: the full-employment labour input and the trend rate of labour-productivity growth. This...