Holding in Company

Slough Estates PLC
10 May 2001


By letter received today the Company has been notified by Britannic Asset
Management Limited ('Britannic') that Britannic have decreased their interest
to 20,630,161 ordinary shares of 25 pence each in the Company, representing a
current interest of 4.99% in the issued share capital of the Company.

We are advised that this aggregate holding of 4.99% is as follows:

Registered Holder - Number of Shares - %
Bank of New York - 221,456 - 0.05%
Chase Nominees Limited - 16,105,316 - 3.89%
Citibank - 3,079,382 - 0.75%
Clydesdale Bank - 956,756 - 0.24%
Northern Trust - 267,251 - 0.06%