Holding(s) in Company

GlaxoSmithKline PLC
05 December 2007


GlaxoSmithKline plc received on 4 December 2007 from Legal & General Group plc a
notification of interests in GlaxoSmithKline plc Ordinary shares of 25 pence
each dated 3 December 2007.  This notice is given in accordance with DTR 5.8.12.

TR-1:               notification of major interests in shares


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

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

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                                        Yes

Other (please specify):______________

3. Full name of person(s) subject to the notification              Legal & General Group Plc (Group)
obligation:
                                                                 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                 03/12/07
crossed or reached if different):

6. Date on which issuer notified:                                              04/12/07

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 Situation previous to the Resulting situation after the triggering transaction
shares        Triggering transaction

 if possible  Number of    Number of    Number of   Number of voting rights   % of voting rights
using the     Shares       Voting       shares
ISIN CODE                  Rights
                                        Direct      Direct       Indirect     Direct       Indirect

Ord GBP 0.25  276,137,003  276,137,003                              BELOW 5 %


B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial    Expiration date Exercise/ Conversion      Number of voting rights    % of voting
instrument                           Period/ Date              that may be acquired if    rights
                                                               the instrument is
                                                               exercised/ converted.



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:

Legal & General Group Plc (Direct and Indirect) (Group) (LGIM BELOW 5% =
Total Position)

Legal & General Investment Management (Holdings) Limited (LGIMH) (Direct
and Indirect)  (LGIM BELOW 5% = Total Position)

Legal & General Investment Management Limited (Indirect) (LGIM) (LGIM BELOW
5% = Total Position)

                   Legal & General Group Plc (Direct) (L&G) (254,504,547 - 4.61% = LGAS, LGPL & PMC)

Legal & General Investment Management (Holdings) Limited       Legal & General Insurance Holdings Limited (Direct)
(Direct) (LGIMHD) (204,989,570-3.71%=PMC)                      (LGIH)

Legal & General Assurance (Pensions Management) Limited  (PMC) Legal & General Assurance Society Limited  (LGAS & LGPL)
(204,989,570-3.71%=PMC)
                                                               Legal & General Pensions Limited (Direct)  (LGPL)


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

                                                                      5,518,245,946


14. Contact name:                                                   Helen Lewis (LGIM)

15. Contact telephone number:                                         020 3124 3851




                      This information is provided by RNS
            The company news service from the London Stock Exchange