23 Provisions
 
 
  Property provision 
£m 
At 1 January 2006 3.3 
Provisions acquired 0.3 
Utilisation (2.1)
Additional provisions in the year 0.1 
Unwinding of interest on discounted provisions 0.1 
At 31 December 2006 1.7 

The property provision is made on a discounted basis for the future rent expense and related cost of leasehold property (net of estimated sub-lease income) where the space is vacant or currently not planned to be used for ongoing operations. The expectation is that this expenditure will be incurred over the remaining periods of the leases which range from 1 to 6 years.