The Impact Assessment published at the 2008 pre-Budget report provides an estimate of the compliance costs:
The Budget 2009 forecast is for CPI inflation to fall to 1 per cent. by the end of 2009 and increase to 1 per cent. in the second quarter of 2010. CPI inflation is forecast to remain below target in 2010 and then to return close to target during 2011.
Updated forecasts for inflation will be published later this autumn in the pre-Budget report, as is usual practice.