Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Forms S-3 (Registration Nos. 333-88358 and 333-128438) and Forms S-8 (Registration Nos. 333-106977, 333-115175, 333-143129, 333-156492, 333-171453 and 333-174153) of West Pharmaceutical Services, Inc. of our reportdated February 25, 2015 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10‑K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Philadelphia, Pennsylvania

February 25, 2015