EXHIBIT 12.1

 

Ratio of Earnings to Fixed Charges

 

In calculating the ratio of earnings to fixed charges, earnings consist of income before income taxes from continuing operations plus fixed charges. Fixed charges consist of interest expense, amortization of debt issuance costs, and of one-third of operating lease rental expense (deemed representative of that portion of rental expense estimated to be attributable to interest).

 

This table provides the calculations of the ratio of earnings to fixed charges under UK GAAP:

 

    

Period from
Inception

to December 31,

2000


    Year ended December 31,

 
       2001

    2002

    2003

    2004

 
     (in thousands)  

Earnings:

                                        

Profit/(loss) from continuing operations before tax

   £ (241,895 )   £ (160,165 )   £ (44,433 )   £ 21,072     £ 40,718  

Fixed charges

     11,130       7,994       14,208       13,653       15,500  
    


 


 


 


 


Total

   £ (230,765 )   £ (152,171 )   £ (30,225 )   £ 34,725     £ 56,218  
    


 


 


 


 


Fixed charges:

                                        

Interest

   £ 7,807     £ 3,756     £ 4,099     £ 3,797     £ 5,040  

Amortization of debt issuance costs

                             26  

Interest component of rent expense

     3,323       4,238       10,109       9,856       10,434  
    


 


 


 


 


Total fixed charges

   £ 11,130     £ 7,994     £ 14,208     £ 13,653     £ 15,500  
    


 


 


 


 


Ratio of earnings to fixed charges

     (a )     (a )     (a )     2.5 x     3.6 x

 

(a) The earnings are insufficient to cover fixed charges by £241.9 million, £160.2 million and £44.4 million for the period of inception to December 31, 2000 and the years ended December 31, 2001 and 2002, respectively.

 

This table provides the calculations of the ratio of earnings to fixed charges under US GAAP:

 

     Year ended December 31,

 
     2002

    2003

    2004

 
     (in thousands, except ratios)  

Earnings:

                        

Profit/(loss) from continuing operations before tax

   £ (29,869 )   £ 331,413     £ 56,905  

Fixed charges

     14,208       13,653       15,500  
    


 


 


Total

   £ (15,661 )   £ 345,066     £ 72,405  
    


 


 


Fixed charges:

                        

Interest

   £ 4,099     £ 3,797     £ 5,040  

Amortization of debt issuance costs

                 26  

Interest component of rent expenses

     10,109       9,856       10,434  
    


 


 


Total fixed charges

   £ 14,208     £ 13,653     £ 15,500  
    


 


 


Ratio of earnings to fixed charges

     (a )     25.3 x     4.7 x

 

(a) The earnings are insufficient to cover fixed charges by £29.9 million for the year ended December 31, 2002.