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. The new rates will be effective as of Wednesday 30 March 2005 and Thursday 31 March 2005, and consequently reflected in the first intra-day margin run on those days.
   
   
2. LCH.Clearnet Ltd has set new OMS - II parameters due to the introduction of new contracts.
   
   • Unibet Group PZC/SDB (UNIB) on Wednesday 30 March 2005.
   • JM-BYGG AB (JM) on Thursday 31 March 2005.
   • Nettonnet (NON) on Thursday 31 March 2005.
     
     
3. This circular supersedes LCH.Clearnet Ltd Circular No 1860: EquityClear/EDX 049 dated 28 February 2005.
   
   
4. 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.
   
   
5. 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