LIMITED POWER OF ATTORNEY FOR

WEST PHARMACEUTICAL SERVICES, INC.

SECTION 16(a) FILINGS


Know all by these presents that the undersigned hereby constitutes and
appoints each of Luis Cantarero, Jeffrey Tse, Ryan Metz and
Joanne Boyle, signing singly, the undersigneds true and lawful
attorney-in-fact to:

(1) Execute for and on behalf of the undersigned, in the undersigneds
capacity as an officer, director and/or shareholder of West Pharmaceutical
Services, Inc. (the Company), Forms 3, 4, and 5 and amendments thereto
in accordance with Section 16(a) of the Securities Exchange Act of 1934 and
 the rules thereunder;

(2) Do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form
3, 4, or 5 or amendment thereto and timely file such form with the United
States Securities and Exchange Commission (the SEC) and any stock exchange
or similar authority; and

(3) Take any other action of any type whatsoever, which, in the opinion of
such attorney-in-fact, may be necessary or desirable in connection with the
 foregoing authority, it being understood that the documents executed by
such attorney-in-fact on behalf of the undersigned pursuant to this Power of
Attorney shall be in such form and shall contain such terms and conditions
as such attorney-in-fact may approve.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and
powers herein granted, as fully to all intents and purposes as the undersigned
might or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact,
or such attorney-in-facts substitute or substitutes, shall lawfully do or
cause to be done by virtue of this Power of Attorney and the rights and
powers herein granted.

The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in
such capacity at the request of the undersigned, are not assuming, nor is the
Company assuming, any of the undersigneds responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to
the undersigneds holdings of and transaction in securities of the Company,
unless earlier revoked by the undersigned in a signed writing delivered to
the foregoing attorneys-in-fact. This Power of Attorney may be filed with the
SEC as a confirming statement of the authority granted herein.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 26th day of Feb 2018.



SIGNATURE

/s/ Quintin J. Lai