Slough Estates Agree to Sell Stake in Tipperary

Slough Estates PLC
                  

Tipperary Corporation, in which Slough Estates USA holds a 54% interest,
announced today that it has entered into a merger agreement under which
Australia-based Santos LTD will acquire 100% of Tipperary common stock at a
price of $7.41 per share.

Slough Estates, a leading provider of flexible business space, has agreed to
vote its shares in favour of the transaction. Slough Estates will receive gross
proceeds of $222 million which includes approximately $20 million of debt due to
Slough Estates plc. This represents a substantial premium to the current book
value of $20 million.

When the transaction is completed Slough Estates will be relieved of all
liabilities relating to its investment in Tipperary and its subsidiaries.

Tipperary Corporation is an independent oil and gas company based in Denver but
with operations in Queensland, Australia.

Ian Coull, Chief Executive of Slough Estates, commented; 'The sale of our
interest in Tipperary is in line with our strategy to dispose of our non-core
assets and to increase our focus on the provision of flexible business space for
core property customers. The sale of Tipperary follows the successful sale of
Quail West, the Florida based leisure development. We have achieved an excellent
price for Tipperary, which after costs will exceed book value by $180 million,
which shows that the decision to delay this sale until the outstanding
litigation was settled has been fully justified to maximise shareholder value.

Slough Estates is a leading provider of flexible business space in business
parks in Western Europe and North America, with over 1500 customers occupying
2,996,967 square metres of business space, with a total value of £3.9 billion.
Slough Estates' properties are in suburban locations in close proximity to the
main business centres, where there is long term demand for business
accommodation to serve these key economic regions. The company's main activities
are currently based around London, Brussels, Paris, Düsseldorf, San Francisco
and San Diego and the company continues to develop new business parks with the
long-term objective of building shareholder value and enhancing its reputation
for quality buildings offering excellent value to customers.

www.sloughestates.com

For further information contact:


Slough Estates                                Shared Value Limited
Ian Coull, Chief Executive Officer            Andrew Best / Emily Bruning
Tel: [phone]                            Tel: [phone] / 5027