Holding(s) in Company

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

GlaxoSmithKline Plc

2. Reason for notification (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:

Legal & General Group Plc (Group)

Legal & General Investment Management Limited (LGIM)

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

Legal & General Assurance (Pensions Management) Limited (PMC)

Legal & General Group Plc (L&G)

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

22 September 2008

6. Date on which issuer notified:

23 September 2008

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

Below 5% (Group)

Below 5% (LGIM)

8. Notified details:

A: Voting rights attached to shares

Class/type of shares 

 if possible using the ISIN CODE

Situation previous to the Triggering transaction 

Resulting situation after the triggering transaction

Number of Shares 

Number of Voting Rights 

Number of shares 

Number of voting rights

% of voting rights

Direct

Indirect 

Direct

Indirect

ORD

GBP 0.25

261,627,964

261,627,964

Below 5%

B: Financial Instruments

Resulting situation after the triggering transaction 

Type of financial instrument 

Expiration date 

Exercise/ Conversion Period/ Date 

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

% of voting rights

Total (A+B)

Number of voting rights

% of voting rights

Below 5%

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

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:

Notification using the total voting rights figure of 5,218,693,637

14. Contact name:

Helen Lewis (LGIM)

15. Contact telephone number:

020 3124 3851