Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

 IP Group plc 

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

Yes 

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

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to the notification obligation:

Prudential plc group of companies 

4. Full name of shareholder(s) (if different from 3.):

M&G Investment Management Limited

Nortrust Nominee Ltd A/C MKM01 - 4,800,000

Nortrust Noms Ltd - 2,089,320

Nortrust Noms Ltd A/C PUC01 - 289,763

Nortrust Noms Ltd A/C PUQ01 - 4,587,742

Pruclt HSBC GIS Nom (UK) PPLAC - 877,407

M&G Limited

Nortrust Nominee Ltd A/C MHF01 - 54,450

5. Date of the transaction and date on which the threshold is crossed or reached:

 24 August 2009 

6. Date on which issuer notified:

25 August 2009

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

5%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares

if possible usingthe ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Numberof Shares

Numberof Voting Rights

Numberof shares

Number of votingrights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

 GB00B128J450

Below 5%

Below 5%

12,698,682

12,698,682

5.07%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 12,698,682

5.07%

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

Prudential plc (parent company)

M&G Group Limited (wholly owned subsidiary of Prudential plc)

M&G Limited (wholly owned subsidiary of M&G Group Limited)

M&G Investment Management Limited (wholly owned subsidiary of M&G Limited) 

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 rights:

N/A

13. Additional information:

Calculations based on a Total Voting Rights figure of 250,291,965

14. Contact name:

Greg Smith 

15. Contact telephone number:

0845 074 2929