Exhibit 21

SUBSIDIARIES OF THE COMPANY

	State/County of Incorporation	Stock Ownership
West Pharmaceutical Services, Inc	Pennsylvania	Parent Co.
Tech Group North America, Inc.	Arizona		100.0	%
West Pharmaceutical Services Lakewood, Inc.	Delaware		100.0
West Pharmaceutical Services Canovanas, Inc.	Delaware		100.0
West Pharmaceutical Services Vega Alta, Inc.	Delaware		100.0
West Pharmaceutical Services of Delaware, Inc.	Delaware		100.0
West Pharmaceutical Services Delaware Acquisition, Inc.	Delaware		100.0
West Analytical Laboratories LLC	Delaware		100.0
Senetics, Inc.	Delaware		100.0
West Pharmaceutical Services of Florida, Inc.	Florida		100.0
Tech Group Grand Rapids, Inc.	Michigan		100.0
Citation Plastics Co.	New Jersey		100.0
Medimop USA, LLC	Pennsylvania		100.0
West Pharmaceutical Services Argentina S.A.	Argentina		100.0
West Pharmaceutical Services Australia Pty. Ltd.	Australia		100.0
West Pharmaceutical Services Brasil LTDA.	Brasil		100.0
West Pharmaceutical Packaging (China) Company Ltd.	China		100.0
West Pharmaceutical Services Shanghai Medical Rubber Products Co. Ltd.	China		95.0	(a)
West Pharmaceutical Services Colombia S.A.	Colombia		98.3	(b)
West Pharmaceutical Services Holding Danmark ApS	Denmark		100.0
West Pharmaceutical Services Danmark A/S	Denmark		100.0
West Pharmaceutical Services Limited Danmark A/S	Denmark		100.0
PM2OL A/S	Denmark		100.0
West Pharmaceutical Services Group Limited	England		100.0
West Pharmaceutical Services Cornwall Limited	England		100.0
Plasmec Public Limited Company	England		100.0
West Pharmaceutical Services Lewes Limited	England		100.0
West Pharmaceutical Services Dublin, Limited	England		100.0
W.P.S.F. Limited	England		100.0
West Pharmaceutical Services France S.A.	France		99.9	(c)
West Pharmaceutical Services Holding France SAS	France		100.0
West Pharmaceutical Services Normandie SAS	France		100.0
West Pharmaceutical Services Holding GmbH	Germany		100.0
West Pharmaceutical Services Verwaltungs GmbH	Germany		100.0
West Pharmaceutical Services Deutschland GmbH Co KG	Germany		100.0
West Pharmaceutical Packaging India Private Limited	India		100.0
Tech Group Europe Limited	Ireland		100.0
Medimop Medical Projects (North), Ltd.	Israel		100.0
Medimop Medical Projects Ltd.	Israel		100.0
West Pharmaceutical Services Italia S.r.L.	Italy		100.0
Tech Group de Mexico SRL de CV	Mexico		100.0
(mfg) Tech Group Puerto Rico, Inc.	Puerto Rico		100.0
West Pharmaceutical Services Beograd	Serbia		100.0
West Pharmaceutical Services Singapore Pte. Ltd.	Singapore		100.0
West Pharmaceutical Services Singapore (Holding) Pte. Limited	Singapore		100.0
West Pharmaceutical Services Hispania S.A.	Spain		100.0
West Pharmaceutical Services Venezuela C.A.	Venezuela		100.0
(a) Represents a cooperative joint venture between West Pharmaceutical Services Singapore Pte. Ltd. and Shanghai New Asia Medical Rubber Factory Co. Ltd.
(b) In addition, 1.55% is held in treasury by West Pharmaceutical Services Colombia S.A. and 0.19% is held by 3 local shareholders.
(c) 0.01% is owned directly by 8 individual shareholders.