1. LCH.Clearnet Ltd has, after consultation with EDX London Limited (EDX), revised the margin parameters as marked in bold and italic on the attached document.
   
2. The new rates will be effective as of:
   
   • Skistar B – Thursday 28th July 2005.
   • Studsvik – Friday 29th July 2005.
   • Q – Med – Tuesday 2nd August 2005.
     
     
3. LCH.Clearnet Ltd has set new OMS - II parameters, as highlighted in bold and italic in the attached document.
   
   
4. This circular supersedes LCH.Clearnet Ltd Circular No 1908: EquityClear/EDX 056 dated 28 June 2005.
   
   
5. Details of the current OMS - II Parameters, for all EDX contracts, can be found on the LCH.Clearnet Ltd website (www.lchclearnet.com) by selecting ‘Limited’. Details can then be found under the ‘Risk & Margining’ section. Alternatively details can also be found using the BOPC system.
   
   
6. Members seeking further information in relation to this circular should contact the following:
   

   LCH.Clearnet Ltd

   Risk Operations

   020 7426 7520

Andrew White
Director, Risk Policy

EDX Margin Rate Spreadsheet