REG-Interserve PLC: Holding(s) in Company

.
TR-1 (i) NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached (ii):

Interserve Plc

2. Reason for the notification State
Yes/No

An acquisition or disposal of voting rights Yes

An acquisition or disposal of financial instruments which may
result in the
acquisition of shares already issued to which voting rights are
attached

An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to the notification obligation JPMorgan
(iii): Chase & Co

4. Full name of shareholder(s) (if different from 3.) (iv): JPMorgan
Asset
Management
(UK) Limited

J.P. Morgan
Investment
Management
Inc.

5. Date of the transaction (and date on which the threshold is 18 July 2008
crossed
or reached if different) (v):

6. Date on which issuer notified: 21 July 2008

7. Threshold(s) that is/are crossed or reached: 5%

8. Notified details:

A: Voting rights attached to shares

Class/type of Situation previous Resulting situation after the triggering
shares to transaction (vii)
if possible the Triggering
using the ISIN transaction (vi)
CODE

Number Number Number Number of voting % of voting
of of of rights (ix) rights
Shares Voting shares
Rights
(viii)

Direct Direct Indirect Direct Indirect
(x) (xi)

GB0001528156 6,655,321 6,655,321 6,241,628 6,241,628 4.99%

B: Financial Instruments

Resulting situation after the triggering transaction (xii)

Type of Expiration Exercise/ Number of voting % of
financial date (xiii) Conversion rights that may be voting
instrument Period/ Date (xiv) acquired if the rights
instrument
is exercised/
converted

N/A

Total (A+B)

Number of voting rights % of voting rights

6,241,628 4.99%

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are
effectively held, if applicable (xv):

Total disclosable holding for JPMorgan Chase & Co: 6,241,628 (4.99%)

Holdings by controlled undertakings of JPMorgan Chase & Co.

JPMorgan Asset Management (UK) Limited

J.P. Morgan Investment Management Inc.

Proxy Voting:

10. Name of the proxy holder: N/A

11. Number of voting rights proxy holder will cease to hold: N/A

12. Date on which proxy holder will cease to hold voting N/A
rights:

13. Additional information: Please note the
group has other
holdings which
are covered by
exemptions.

14. Contact name: Trevor Bradbury

Interserve Plc

15. Contact telephone number: 01189 602328

END
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