Holding(s) in Company
Pennon Group PLC
20 March 2007
PENNON GROUP PLC
FOR IMMEDIATE RELEASE
HOLDING IN COMPANY
NOTIFICATION OF MAJOR INTERESTS IN SHARES
1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached
PENNON GROUP PLC
2. Reason for the notification
An acquisition or disposal of voting rights
3. Full name of person(s) subject to the notification obligation (iii):
AXA S.A., 25 Avenue Matignon, 75008 Paris and its group of companies
4. Full name of shareholder(s) (if different from 3)
5. Date of the transaction (and date on which the threshold is crossed or
reached if different)
2 March 2007
6. Date on which issuer notified:
16 March 2007
7. Threshold(s) that is/are crossed or reached:
8. Notified details:
A: Voting rights attached to shares
Class/type of shares if possible Situation previous to the Triggering transaction
using the ISIN CODE
Number of shares Number of voting Rights
Ordinary
B18V863
Resulting situation after the triggering transaction
Class/type of shares if Number of shares Number of voting rights (ix) % of voting rights
possible using the ISIN CODE
Direct Direct (x) Indirect (xi) Direct Indirect
Ordinary
B18V863 17,509,291 17,509,291 1,099,362 4.92 0.31
B: Financial Instruments
Resulting situation after the triggering transaction (xii)
Type of Expiration Date Exercise/Conversion Number of voting rights % of voting rights
financial (xiii) Period/ Date (xiv) that may be acquired if the
instrument instrument is exercised/
converted.
Total (A+B)
Number of voting rights % of voting rights
18,608,653 5.23%
9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable :
Name of the Company/Fund Number of Shares % of issued share capital
Sun Life Unit Assurance Ltd A/c X 5,488,326 1.54117
Direct
Sun Life Unit Assurance Ltd A/c X 7,371,003 2.06984
Direct
AXA UK Investment Co ICVC 28,881 0.00811
Extra Income Fund
Indirect
AXA UK Investment Co ICVC 1,010,573 0.28378
UK Equity Income Fund
Indirect
AXA UK Investment Co ICVC 20,000 0.00562
UK Growth Fund
Indirect
Sun Life Pensions Management Ltd 56,313 0.01581
Direct
Sun Life Pensions Management Ltd A/c 3,260,439 0.91556
Direct
AXA Insurance UK 171,320 0.04811
Direct
AXA UK Group Pension Scheme 23,000 0.00646
Indirect
Sun Life International (IOM) Ltd 100,000 0.02808
Direct
Sun Life Pensions Management Ltd 11,758 0.00330
Direct
Sun Life Pensions Management Ltd 2,500 0.00070
Direct
Sun Life Unit Assurance Ltd 87,608 0.02460
LTAV UK Equity
Direct
Sun Life Unit Assurance Ltd 64,327 0.01806
FTSE All Share Tracker
Direct
Sun Life Pensions Management 393,782 0.11058
LTAV UK Equity
Direct
Sun Life Pensions Management 296,254 0.08319
FTSE All Share Tracker
Direct
Framlington onshore private clients 16,908 0.00475
Indirect
AXA Winterthur 205,661 0.05775
Direct
Total Direct 17,509,291 4.91675
Total Indirect 1,099,362 0.30871
TOTAL 18,608,653 5.22546
Proxy Voting:
10. Name of the proxy holder:
11. Number of voting rights proxy holder will cease to hold:
12. Date on which proxy holder will cease to hold voting rights:
13. Additional information:
Annex to Notification Of Major Interests In Shares
A: Identity of the person or legal entity subject to the notification obligation
Full name (including legal form for legal entities):
Pennon Group Plc
Contact address (registered office for legal entities):
Peninsula House, Rydon Lane, Exeter, Devon, EX2 7HR
Contact name Margaret Lilian Heeley - Assistant Company Secretary
Phone number 01392 443060
20 March 2007
www.pennon-group.co.uk
End transmission
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