The information requested falls within the responsibility of the UK Statistics Authority. I have asked the Authority to reply.
Letter from Karen Dunnell, dated 22 May 2008:
As National Statistician, I have been asked to reply to your parliamentary question asking what estimate I have made of month by month increases in (a) food prices and (b) energy prices in each month since January 2007 compared with (i) the previous month and (ii) the same month a year earlier. (206687)
Food and energy are included in both the consumer prices index (CPI) and the retail prices index (RPI). Month on month and 12 month changes for both food and energy in both indices can be found by accessing the ‘Consumer Price Indices’ option in the following link.
Following the link provided will take you to a secondary menu. Both the monthly and annual changes in the CPI/RPI can be selected from this menu. The required information can then be found by selecting the group titles given about the clicking on ‘View Series’.