Exhibit 24

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ Mark A. Buthman

                                                      Mark A. Buthman

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ Thomas W. Hofmann

                                                         Thomas W. Hofmann

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ L. Robert Johnson

                                                                        L. Robert Johnson

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as her attorneys-in-fact to sign on her behalf and in her capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ Paula A. Johnson

                                                         Paula A. Johnson

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ Douglas A. Michels

                                                         Douglas A. Michels

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ John H. Weiland

                                                                               John H. Weiland

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ Anthony Welters

                                                                           Anthony Welters

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                  /s/ Robert C. Young

                                                                      Robert C. Young

POWER OF ATTORNEY

The undersigned hereby authorizes and appoints Donald E. Morel, Jr. and John R. Gailey III, and each of them, as his attorneys-in-fact to sign on his behalf and in his capacity as a director of West Pharmaceutical Services, Inc., and to file, the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and all amendments, exhibits and supplements thereto.

Date:           February 21, 2012                                                                /s/ Patrick J. Zenner

        Patrick J. Zenner