Additional Listing

    FOR IMMEDIATE RELEASE

7 April 2003

Scipher plc ("Scipher")

Deferred consideration due for the acquisition of Probot Communications Limited
("Probot").

Following the acquisition of Probot by Scipher announced on 5 July 2001, the
maximum level of sales under the earnout provisions has been achieved by
Probot, for which deferred consideration of £2.95 million is payable by
Scipher. It has been agreed that this will be satisfied in total by the issue
of approximately 8.9 million new Scipher ordinary shares and £650,000 in cash
and will be paid in four tranches. This arrangement implies an effective issue
price of the new Scipher shares of approximately 25.8p per share.

The first tranche of consideration consists of 6,000,000 new Scipher shares,
which have now been allotted. The balance of the deferred consideration
consists of 2,905,039 Scipher shares and £650,000 cash plus interest to be paid
in three installments on 31 March 2004, 31 March 2005 and 31 March 2006.

Application has been made to the UK Listing Authority and to the London Stock
Exchange for the first tranche of 6,000,000 new Scipher Ordinary Shares to be
admitted to the Official List and to trading on the London Stock Exchange's
market for listed securities. Admission of these shares is anticipated to be
effective on 7 April 2003.

Enquiries:

Scipher plc:

Michael Kendon 020 8848 6444

Financial Dynamics:

James Melville-Ross 020 7831 3113

Juliet Clarke 020 7831 3113



END