Holding(s) in Company

Zen Research PLC
18 January 2002

18 January 2002

Letter to:     Company Announcements Office

ZEN RESEARCH PLC HOLDING IN COMPANY

Ord 0.05p shares

Zen Research plc received notification on 17 January 2002 that Prudential plc
and all of its subsidiary companies no longer have a notifiable interest in
the issued share capital of Zen.

Zen Research PLC

Mark Way

Investor Relations

[phone]