SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                  SCHEDULE 13G
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT 
            TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED 
                             PURSUANT TO RULE 13d-2(b)
                                (Amendment No. 1)*


                             GW Pharmaceuticals Plc
--------------------------------------------------------------------------------
                                (Name of Issuer)


                                   Common Stock
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    G4210C104
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                                 31 December 2013
--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X]  Rule 13d-1(b)
[_]  Rule 13d-1(c)
[ ]  Rule 13d-1(d)

--------------------------------------------------------------------------------
1 The remainder of this cover page shall be filled out for a reporting person's 
initial filing on this form with respect to the subject class of securities, 
and for any subsequent amendment containing information which would alter the 
disclosures provided in a prior cover page.
 The information required in the remainder of this cover page shall not be 
 deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
 Act of 1934 the "Act") or otherwise subject to the liabilities of that section
 of the Act, but shall be subject to all other provisions of the Act (however,
 see the Notes.)

                         (Continued on following pages)

                                Page 1 of 6 Pages








CUSIP No. G4210C104          Schedule 13G                 Page 2 of 6 Pages
          -----------        --------------

1.       NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         M&G Investment Management Limited 
         No I.R.S Identification Number
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF THE MEMBER OF A GROUP*
                                                                 (a)  [ ]
                                                                 (b)  [ ]
--------------------------------------------------------------------------------
3.       SEC USE ONLY
--------------------------------------------------------------------------------
4.       CITIZENSHIP OR PLACE OF ORGANIZATION 
         United Kingdom, England
--------------------------------------------------------------------------------
                     5.   SOLE VOTING POWER
NUMBER OF                 0
SHARES              ------------------------------------------------------------
BENEFICIALLY         6.   SHARED VOTING POWER
OWNED BY                  26,241,389
EACH                ------------------------------------------------------------
REPORTING            7.   SOLE DISPOTIVE POWER
PERSON                    0
WITH                ------------------------------------------------------------
                     8.   SHARED DISPOTIVE POWER
                          26,241,389
--------------------------------------------------------------------------------
9.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         26,241,389
--------------------------------------------------------------------------------
10.      CHECK BOX IF AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN 
         SHARES*                                              [_]
--------------------------------------------------------------------------------
11.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
         14.78%
--------------------------------------------------------------------------------
12.      TYPE OF REPORTING PERSON
         IA
--------------------------------------------------------------------------------







CUSIP No. G4210C104            Schedule 13G                 Page 3 of 6 Pages
          -----------        --------------

1.       NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

         M&G Investment Funds (3)
         No I.R.S Identification Number
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF THE MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]
--------------------------------------------------------------------------------
3.       SEC USE ONLY
--------------------------------------------------------------------------------
4.       CITIZENSHIP OR PLACE OF ORGANIZATION 
         United Kingdom, England
--------------------------------------------------------------------------------
                     5.   SOLE VOTING POWER
NUMBER OF                 0
SHARES              ------------------------------------------------------------
BENEFICIALLY         6.   SHARED VOTING POWER
OWNED BY                  26,241,389
EACH                ------------------------------------------------------------
REPORTING            7.   SOLE DISPOTIVE POWER
PERSON                    0
WITH                ------------------------------------------------------------
                     8.   SHARED DISPOTIVE POWER
                          26,241,389
--------------------------------------------------------------------------------
9.       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         26,241,389
--------------------------------------------------------------------------------
10.      CHECK BOX IF AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN 
         SHARES*                                              [_]
--------------------------------------------------------------------------------
11.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
         14.78%
--------------------------------------------------------------------------------
12.      TYPE OF REPORTING PERSON
         OO
--------------------------------------------------------------------------------



CUSIP No. G4210C104             Schedule 13G                 Page 4 of 6 Pages
          -----------        --------------

Item 1(a).   Name of Issuer: 

                  GW Pharmaceuticals Plc

Item 1(b).   Address of Issuer's Principal Executive Offices:

		       Porton Down Science Park, Salisbury, Wiltshire, SP4 0JQ

Item 2(a).   Name of Person Filing: 
1. M&G Investment Management Limited (MAGIM)
2. M&G Investment Funds (3)

           
Item 2(b).   Address of Principal Business Office or, if None,     
                  Residence:

                  Governor's House, Laurence Pountney Hill, London, EC4R 0HH

Item 2(c).   Citizenship: 

                  United Kingdom, England

Item 2(d).   Title of Class of Securities: 

                  Common Stock Class A

Item 2(e).   CUSIP Number:  

                  G4210C104

Item 3.	      Type of Person:

          	(e) MAGIM is an investment advisor in accordance with 
              	s.240.13d-1(b)(1)(ii)(E)
         
            	All the securities covered by this report are legally 
         owned by MAGIMs Investment advisory clients, and none are 
         owned directly by MAGIM.


M&G Investment Funds 1 is an open-ended investment company with variable
capital, incorporated in England and Wales and authorized by the Financial
Services Authority. It is not registered with the Securities and Exchange 
Commission under the investment company act of 1940.

Item 4.      Ownership.
             Provide the following information regarding the aggregate 
             number and percentage of the class of securities of the issuer 
             identified in Item 1.

        (a)  Amount Beneficially Owned: 26,241,389

        (b)  Percent of Class: 14.78%

        (c)  Number of shares as to which such person has:
         M&G Investment Management Limited

               i)     sole power to vote or to direct the vote  0
                                                                ----------
               (ii)   shared power to vote or to direct the
                      vote                                      26,241,389
                                                                ----------
               (iii)  sole power to dispose or to direct the
                      disposition of                            0
                                                                ----------
               (iv)   shared power to dispose or to direct the
                      disposition of                            26,241,389
                                                                ----------
                                                    M&G Investment Funds (3)
               (i)    sole power to vote or to direct the vote  0
                                                                ----------
               (ii)   shared power to vote or to direct the
                      vote                                      26,241,389
                                                                ----------
               (iii)  sole power to dispose or to direct the
                      disposition of                            0
                                                                ----------
               (iv)   shared power to dispose or to direct the
                      disposition of                            26,241,389
                                                                ----------



CUSIP No. G4210C104            Schedule 13G                 Page 5 of 6 Pages
          -----------        --------------

Item 5.      Ownership of Five Percent or Less of Class.
             If this statement is being filed to report the fact that as of the 
             date hereof the reporting person has ceased to be the beneficial 
             owner of more than five percent of the class of securities, check 
             the following 

             Not applicable.

Item 6.      Ownership of More than Five Percent on Behalf of Another
             Person.

             Not applicable.

Item 7.      Identification and Classification of the Subsidiary Which
             Acquired the Security Being Reported on by the Parent Holding
             Company.

             Not applicable.

Item 8.      Identification and Classification of Members of the Group.


             Not applicable.

Item 9.      Notice of Dissolution of Group.

             Not Applicable



CUSIP No. G4210C104            Schedule 13G                 Page 6 of 6 Pages
  -----------        	  --------------

Item 10.     Certification.
             -------------

          (a) The following certification shall be included if the statement
          is filed pursuant to Rule 13d-1(b):

          "By signing below I certify that, to the best of my knowledge
          and belief, the securities referred to above were acquired
          and are held in the ordinary course of business and were not
          acquired and are not held for the purpose of or with the
          effect of changing or influencing the control of the issuer of
          the securities and were not acquired and are not held in
          connection with or as a participant in any transaction
          having that purpose or effect. "

                                                      
          SIGNATURE

          






          After reasonable inquiry and to the best of my knowledge and belief, 
          I certify that the information set forth in this statement is true, 
          complete and correct.

          By:  --//Mark Thomas//--
          --------------------------------------
          Name:    Mark Thomas
          Title:   Head of Notifiable Reporting
          Date:    February 13, 2014





Exhibit A

AGREEMENT OF JOINT FILING

In accordance with Rule 13d-1(k) under the Securities Exchanges 
Act of 1934, as amended, the undersigned hereby agrees that the 
foregoing statement on Schedule 13G/A, is filed on behalf of each 
of the undersigned without the necessity of filing additional 
joint acquisition statements.  The undersigned acknowledge that 
each shall be responsible for the timely filing of such 
amendments, and for the completeness and accuracy of information 
concerning the others, except to the extent that he or it knows 
or has reason to believe that such information is inaccurate.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement
on the 13th day of February, 2013.

					M&G INVESTMENT MANAGEMENT LIMITED

					By  /s/ Mark Thomas
Date:  February 13, 2013	Head of M&G Notifiable Reporting



					M&G Investment Funds (3)

					By  /s/ Mark Thomas
Date:  February 13, 2013      Head of M&G Notifiable Reporting