Holding(s) in Company

Serco Group plc

Not for release, publication or distribution, in whole or in part, in, into or
from the United States of America, Canada, Australia or Japan

Serco buys 127,930 ITNET plc Shares

Serco announces that on 18th January 2005, it acquired in the market a total of
127,930 ITNET shares at 320 pence per share. This represents approximately 0.17
per cent of the issued share capital of ITNET plc. These market purchases were
carried out by Merrill Lynch International, acting as agent for Serco.

Terms herein have the same meaning as in the announcement of the Offer

dated 16 December 2004, save where the context requires otherwise.

ENQUIRIES

Merrill Lynch International (Corporate Broker to Serco)

[phone]

Simon Fraser

Andrew Osborne

Serco Group plc

Francesca Todd [phone]