11. Intangible assets

  Goodwill   Telecommunication
licences and other
  Brands, customer
relationships and
technology
  Computer
software
a

Total  
  £m   £m   £m   £m   £m  
Cost                    
At 1 April 2006 543   206   106   1,784   2,639  
Additions       807   807  
Disposals and adjustments   (15 )   (104 ) (119 )
Acquisitions through business combinations
296   4   12   12   324  
Exchange differences (20 ) (10 )   (12 ) (42 )










 
At 1 April 2007 819   185   118   2,487   3,609  
Additions       826   826  
Disposals and adjustments (62 ) 36   62   (181 ) (145 )
Acquisitions through business combinations
320   6   68   2   396  
Exchange differences 11   39     43   93  










 
At 31 March 2008 1,088   266   248   3,177   4,779  










 
Amortisation                    
At 1 April 2006     62   11   658   731  
Charge for the year     11   13   360   384  
Disposals and adjustments     (8 )   (73 ) (81 )
Acquisitions through business combinations
    1     7   8  
Exchange differences     (7 )   (10 ) (17 )










 
At 1 April 2007     59   24   942   1,025  
Charge for the year     12   43   424   479  
Disposals and adjustments     31     (164 ) (133 )
Acquisitions through business combinations
    2     2   4  
Exchange differences     17     32   49  










 
At 31 March 2008     121   67   1,236   1,424  










 
Carrying amount                    
At 31 March 2008 1,088   145   181   1,941   3,355  










 
At 31 March 2007 819   126   94   1,545   2,584  










 
a
Includes additions in 2008 of £720 million (2007: £741 million) in respect of internally developed computer software.

Impairment tests of goodwill
The group performs an annual goodwill impairment test, based on cash generating units (CGUs). BT Global Services is a CGU. BT Retail comprises four CGUs: Consumer; Business; Enterprises; and BT Ireland. These are the smallest identifiable groups of assets that generate cash inflows that have goodwill and are largely independent of the cash inflows from other groups of assets. The group has made a number of acquisitions in recent years, all of which have been fully integrated into the relevant line of business and CGU. The group’s reorganisation has not impacted the group’s CGUs or the allocation of goodwill.
     Goodwill is allocated to the group’s CGUs as follows:

      BT Retail      
     






     
  BT Global
Services £m
  Consumer
£m
  Business
£m
  Enterprises
£m
  BT Ireland
£m
  Total
£m
 
At 1 April 2006 488    
 
39   16   543  
Acquisition through business combinations
223   57     16     296  
Exchange differences (20 )         (20 )












 
At 1 April 2007 691   57     55   16   819  
Acquisition through business combinations
273   13   34       320  
Disposals and adjustments (39 ) (23 )       (62 )
Exchange differences 11           11  












 
At 31 March 2008 936   47   34   55   16   1,088  












 

The recoverable amount of each CGU is based on value in use calculations. These are determined using cash flow projections derived from financial budgets approved by the board covering a five year period. They reflect management’s expectation of revenue growth, operating costs and margin for each CGU based on past experience. Cash flows beyond the five year period have been extrapolated using an estimated terminal growth rate of 0%. This rate has been determined with regard to projected growth rates for the specific markets in which the CGUs participate and is not considered to exceed the long-term average growth rates for those markets. Discount rates applied to the cash flow forecasts are derived from the group’s pre-tax weighted average cost of capital, adjusted for the different risk profile of the individual CGUs. The discount rates applied were 10% and 11.4%.
     The forecasts are most sensitive to changes in projected revenue growth rates in the first five years of the forecast period. However there is significant headroom and based on the sensitivity analysis performed we have concluded that no reasonably possible changes in the base case assumptions would cause the carrying amount of the CGUs to exceed their recoverable amount.

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