Rule 2.10 Announcement

Reliance Security Group PLC
17 April 2007


                    Reliance Security Group plc ('Reliance')

                                Rule 2.10


In accordance with Rule 2.10 of the City Code on Takeovers and Mergers, the
Company confirms that, as at the close of business on 17 April 2007 its relevant
securities in issue consisted of 21,512,855 ordinary shares of 5 pence each. 
This number of relevant securities excludes the 400,000 shares currently held in 
Treasury.

The ISIN reference number for the ordinary shares of 5 pence each is
GB0007321325 .


Jeremy Simon
Company Secretary



For further information:

Jeremy Simon                Company Secretary              01895 205 003




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