Shareholder information

Nature of trading market

The shares of the Company are traded on the London Stock Exchange (symbol: SIG) and the American Depositary Shares (“ADSs”) representing the shares are quoted on the NYSE (symbol: SIG). Prior to 16 November 2004 the ADSs were traded on the Nasdaq (symbol: SIGY). The ADSs are evidenced by ADRs issued pursuant to an Amended and Restated Deposit Agreement, dated 23 September 2004, and made between the Company, Deutsche Bank Trust Company Americas, as depositary (the “Depositary”) and the holders from time to time of the ADRs.

Each ADS represents ten shares. Prior to 18 October 2004 the ratio of shares per ADS had been 30:1.

The table below sets out, for the calendar years and quarters indicated, (i) the reported high and low middle market quotations for the shares of the Company based on the Daily Official List of the London Stock Exchange and (ii) the reported high and low closing sales prices of the ADSs on the Nasdaq or the NYSE, as applicable, as reported by Datastream.

At 8 April 2008, 41,057 shares and 8,167,764 ADSs (representing 81,677,640 shares) were held of record in the US. These shares collectively represented approximately 4.79% of the total numbers of shares outstanding. Since certain of the shares and ADSs are held by brokers or other nominees, the number of record holders in the US is not representative of the number of beneficial holders or of where the beneficial holders are resident.

    London Stock Exchange
pence per share		          Nasdaq/NYSEUS
dollars per ADS		  
    High Low     High Low
Calendar 2002(1)   132 1/4 65     19 1/4 10 1/4
Calendar 2003(1)   114 1/2 66     19 7/8 10 3/4
Calendar 2004(1)   119 3/4 93     22 1/4 17 1/4
Calendar 2005   117 3/4 93 1/4     22 16 7/8
Calendar 2006              
First quarter   110 1/4 99 3/4     20 17 1/2
Second quarter   112 1/2 92 1/4     19 7/8 17
Third quarter   116 3/4 94 1/4     22 1/4 17 1/4
Fourth quarter   127 110     24 1/4 20 3/4
Calendar 2007              
First quarter   125 1/2 114 1/2     25 22
Second quarter   126 3/4 103     25 3/4 20 1/2
Third quarter - July 108 3/4 96 1/2     22 1/2 19 3/4
  - August 103 1/4 93 1/2     21 1/4 18 3/4
  - Sept 95 82     19 1/2 16 1/2
Fourth quarter - Oct 95 1/2 84     19 3/4 17 1/4
  - Nov 89 3/4 62 1/2     19 12 1/2
  - Dec 71 3/4 62 3/4     14 1/2 12 3/4
Calendar 2008              
First quarter - Jan 72 1/4 54 1/4     14 1/4 11 1/2
  - Feb 71 61 1/4     14 1/2 12 1/4
  - Mar 65 1/2 50     12 1/2 10
  - (up to 8 April) 64 1/4 61 1/2     12 1/3 12
  1. Following the change in the ADS ratio from thirty ordinary shares per ADS to ten ordinary shares per ADS on 18 October 2004, prior figures have been restated.
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