On Wed, 15 Jun 2011 09:14:41 +0100, Mark wrote:

UK inflation is currently an annual 4.5%.

Only if you believe the official figures. I have calculated the
difference between what I buy now and what it cost a year ago. It's
gone up a lot more than 4.5%

The CPI is 4.5% but the RPI is 5.2% and the RPIX 5.3%.

I'm not sure what is different between the "baskets" of each index.

--
Cheers
Dave.