According to the ONS, in October 2009:
The Consumer Prices Index (CPI) rose to 1.5% from 1.1% in September
The Retail Prices Index (RPI) measure, which includes mortgage interest payments and housing costs, rose to -0.8% from -1.4% in September, the biggest rise in almost 20 years.
1) The temporary reduction in VAT expires in January 2010.
2) The government's target for the CPI is 2%.