FORM 6-K

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                       Report of Foreign Private Issuer

                       Pursuant to Rule 13a-16 or 15d-16
                       of the Securities Exchange Act of
                                     1934


                               April 28, 2006

                       Commission File Number 001-14978


                              SMITH & NEPHEW plc
                              (Registrant's name)


                                15 Adam Street
                           London, England WC2N 6LA
             (Address of registrant's principal executive offices)


     [Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.]

               Form 20-F  X                   Form 40-F
                         ---                            ---

     [Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(1).]

               Yes                            No  X
                   ---                           ---

     [Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(7).]

               Yes                            No  X
                   ---                           ---

     [Indicate by check mark whether by furnishing the information contained
in this Form, the registrant is also thereby furnishing information to the
Commission pursuant to Rule 12g3-2 (b) under the Securities Exchange Act of
1934.]

               Yes                            No  X
                   ---                           ---

     If "Yes" is marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2 (b) : 82- n/a.





                                  SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                                                 Smith & Nephew plc
                                                 (Registrant)


Date: April 28, 2006
                                                  By:   /s/ Paul Chambers
                                                        -----------------
                                                 Paul Chambers
                                                 Company Secretary





NOTIFICATION OF TRANSACTIONS OF DIRECTORS, PERSONS DISCHARGING MANAGERIAL
RESPONSIBILITY OR CONNECTED PERSONS

This form is intended for use by an issuer to make a RIS notification required
by DR 3.1.4R(1).


(1)      An issuer making a notification in respect of a transaction relating
         to the shares or debentures of the issuer should complete boxes 1
         to 16, 23 and 24.
(2)      An issuer making a notification in respect of a derivative relating
         the shares of the issuer should complete boxes 1 to 4, 6, 8,13, 14,
         16, 23 and 24.
(3)      An issuer making a notification in respect of options granted to a
         director/person discharging managerial responsibilities should complete
         boxes 1 to 3 and 17 to 24.
(4)      An issuer making a notification in respect of a financial instrument
         relating to the shares of the issuer (other than a debenture) should
         complete boxes 1 to 4, 6, 8, 9, 11, 13, 14, 16, 23 and 24.



Please complete all relevant boxes should in block capital letters.



1. Name of the issuer



Smith & Nephew plc



2. State whether the notification relates to (i) a transaction notified in
accordance with DR 3.1.4R(1)(a); or

(ii) DR 3.1.4(R)(1)(b) a disclosure made in accordance with section 324 (as
extended by section 328) of the Companies Act 1985; or

(iii) both (i) and (ii)



(ii) DR 3.1.4(R)(1)(b) a disclosure made in accordance with section 324 (as
extended by section 328) of the Companies Act 1985



3. Name of person discharging managerial responsibilities/director



Mr Warren Knowlton



4. State whether notification relates to a person connected with a person
discharging managerial responsibilities/director named in 3 and identify the
connected person



N/A...... ..............................



5. Indicate whether the notification is in respect of a holding of the person
referred to in 3 or 4 above or in respect of a non-beneficial interest



In respect of a holding of Mr Warren Knowlton



6. Description of shares (including class), debentures or derivatives or
financial instruments relating to shares



Ordinary shares of US 20 cents



7. Name of registered shareholders(s) and, if more than one, the number of
shares held by each of them



BNY Nominees Limited





8 State the nature of the transaction



Purchase of American Depositary Receipts ('ADRs')





9. Number of shares, debentures or financial instruments relating to shares
acquired



2,400 ADRs representing 12,000 ordinary shares of US 20 cents each



10. Percentage of issued class acquired (treasury shares of that class should
not be taken into account when calculating percentage)



Less than 0.01%



11. Number of shares, debentures or financial instruments relating to shares
disposed



.....................................



12. Percentage of issued class disposed (treasury shares of that class should
not be taken into account when calculating percentage)



.....................................



13. Price per share or value of transaction



US$42.10 per ADR



14. Date and place of transaction



27 April 2006



15. Total holding following notification and total percentage holding following
notification (any treasury shares should not be taken into account when
calculating percentage)



39,001 ordinary shares of US 20 cents each



16. Date issuer informed of transaction



27 April 2006



If a person discharging managerial responsibilities has been granted options by
the issuer complete the following boxes



17 Date of grant



...........................................



18. Period during which or date on which it can be exercised



....................................................



19. Total amount paid (if any) for grant of the option



.................................................



20. Description of shares or debentures involved (class and number)



.....................................



21. Exercise price (if fixed at time of grant) or indication that price is to be
fixed at the time of exercise



...........................................



22. Total number of shares or debentures over which options held following
notification



....................................................



23. Any additional information



One ADR represents five ordinary shares of US 20 cents each



24. Name of contact and telephone number for queries



Phil Higgins -Assistant Company Secretary - 020 7960 2228



Name and signature of duly authorised officer of issuer responsible for making
notification



Phil Higgins - Assistant Company Secretary



Date of notification



28 April  2006

END