Holding(s) in Company

GlaxoSmithKline PLC
03 December 2007

GlaxoSmithKline plc received on 3 December 2007 from Legal & General Group plc a
notification of interests in GlaxoSmithKline plc Ordinary shares of 25 pence
each dated 30 November 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                                            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              29 November 2007
crossed or reached if different):
6. Date on which issuer notified:                                           30 November 2007
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  Situation previous to the     Resulting situation after the triggering transaction
of shares   Triggering transaction

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

ORD GBP0.25 276,814,903    276,814,903                                                    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)
  (Below 5% = Total Position)

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

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

                  Legal & General Group Plc (Direct) (L&G) (255,111,994 - 4.61% = LGAS, LGPL & PMC)

Legal & General Investment Management (Holdings) Limited       Legal & General Insurance Holdings Limited (Direct)
(Direct) (LGIMHD) (205,597,017 -3.72 % = PMC)                  (LGIH)

Legal & General Assurance (Pensions Management) Limited  (PMC) Legal & General Assurance Society Limited  (LGAS &
(205,597,017 - 3.72 % = PMC)                                   LGPL)

                                                               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
                                                                      5,523,665,578


14. Contact name:                                                   Helen Lewis (LGIM)
15. Contact telephone number:                                         020 3124 3851




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