| 2004 | GE completes the acquisition of Amersham Plc. Amersham Biosciences becomes part of GE Healthcare |
| 2002 | Amersham plc purchases Motorola Life Science's CodeLink™ pre-arrayed slides business |
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| 2002 | Acquisition of Cimarron |
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| 2002 | Amersham plc acquires Pharmacia Corporation's 45 percent share of Amersham Biosciences, taking Amersham ownership to 100 percent |
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| 2002 | Acquisition of AG Technology and InnovaSep Technology |
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| 2001 | Amersham Pharmacia Biotech becomes Amersham Biosciences |
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| 2001 | Nycomed Amersham plc becomes Amersham plc |
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| 2001 | Acquisition of Dan-Process A/S |
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| 2000 | Acquisition of Praelux |
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| 1997 | Merger of Amersham International plc and Nycomed creates Nycomed Amersham plc |
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| 1997 | Merger of Amersham Life Science and Pharmacia Biotech creates Amersham Pharmacia Biotech |
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| 1998 | Acquisition of Molecular Dynamics, Inc. |
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| 1995 | Acquisition of Hoefer Scientific Instruments |
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| 1993 | Acquisition of United States Biochemical |
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| 1986 | Acquisition of LKB-Produkter AB |
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| 1982 | Amersham International becomes first company to be privatized under Thatcher government |
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| 1967 | Pharmacia Fine Chemicals established |
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| 1946 | Amersham becomes a national center for the development and manufacture of radioactive materials for peacetime uses in medicine, scientific research and industry |
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| 1939 | Amersham facility founded to extract radium used to produce luminous paint for the dials of warships and planes |
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| 1911 | Pharmacia founded in Stockholm, Sweden |
