Rule 8.3 - INVERNESS MEDICAL INNOVATIONS INC

FORM 8.3 DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE (Rule 8.3 of the City Code on Takeovers and Mergers) 1. KEY INFORMATION Name of person dealing BARCLAYS PLC (Note 1) Company dealt in INVERNESS MEDICAL INNOVATIONS INC Class of relevant security COM STK USD0.001 to which the dealings being disclosed relate (Note 2) Date of dealing 06 August 2009 2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE (a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3) Long Short Number (%) Number (%) (1) Relevant 2,215,136 2.75% 137,026 0.17% securities (2) Derivatives 0 0.00% (other than options) (3) Options and 148,300 0.18% 154,300 0.19% agreements to purchase/sell Total 2,363,436 2.94% 291,326 0.36% (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of Long Short relevant security: Number (%) Number (%) (1) Relevant securities (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total (c) Rights to subscribe (Note 3) Class of relevant security: Details 3. DEALINGS (Note 4) (a) Purchases and sales Purchase/sale Number of Securities Price per unit (GBP) Purchase 1,364 33.11281525 Purchase 1,888 33.59 Purchase 22 33.2000 USD Purchase 768 33.2000 USD Purchase 914 33.1230 USD Purchase 1,078 33.2000 USD Purchase 1,700 33.07547059 Purchase 3,009 33.0855899 Purchase 2,393 33.07016298 Purchase 200 33.22 Purchase 92 33.18 Purchase 300 33.16333333 Purchase 100 33.05 Purchase 4,900 33.05 Purchase 928 33.59 Purchase 3,634 33.13758943 Purchase 699 33.16852647 Purchase 311 33.2 Purchase 200 33.15 Purchase 401 33.19004988 Purchase 400 33.17575 Purchase 1,700 33.18411765 Purchase 800 33.1 Purchase 300 33.15 Purchase 100 33.18 Purchase 1,198 33.2 Purchase 800 33.115 Purchase 730 33.1585 Purchase 900 33.1233 Purchase 330 33.14 Purchase 9,100 33.11362637 Purchase 500 33.222 Purchase 400 33.085 Purchase 235 33.59 Purchase 300 34.37 Purchase 308 33.2 Purchase 200 34.39 Purchase 600 33.09666667 Purchase 1,600 33.07125 Purchase 200 33.235 Purchase 100 33.09 Purchase 100 33.3 Purchase 10,396 33.02829677 Purchase 200 33.01 Purchase 1,600 33.1034875 Purchase 100 33.3 Purchase 1,000 33.147 Purchase 600 33.13 Sale 300 33.15 Sale 500 33.164 Sale 2,000 33.07295 Sale 225 33.09333333 Sale 200 33.01 Sale 300 33.07 Sale 1,000 34.284 Sale 100 34.259 Sale 200 33.175 Sale 330 33.14 Sale 930 33.13623656 Sale 200 33.105 Sale 44 33.2000 USD Sale 700 33.09142857 Sale 1,198 33.59 Sale 100 33.21 Sale 100 33.3 Sale 800 33.115 Sale 500 33.1192 Sale 100 34.46 Sale 4,600 33.1124 Sale 234 33.5043 Sale 900 33.1233 Sale 730 33.1585 Sale 200 33.01 Sale 777 33.59 Sale 1,076 33.59 Sale 100 33.011 Sale 100 33.16 Sale 92 33.18 Sale 600 33.01 Sale 5,000 33.05 Sale 546 33.2000 USD Sale 7,066 33.00647608 Sale 84 33.2000 USD Sale 22,500 33.1038 Sale 400 33 Sale 500 33.0272 Sale 1,908 33.2000 USD Sale 1,481 33.0846 USD Sale 1,480 33.2000 USD Sale 1,004 33.0901 USD Sale 924 33.2000 USD Sale 700 33.0767 USD Sale 210 33.2000 USD Sale 136 33.2000 USD Sale 475 33.07421053 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name, Writing, Number of Exercise Type, e.g. Expiry Option money e.g. call selling, securities to price American, date paid/received option purchasing, which the option European etc. per unit (GBP) varying etc. relates (GBP) (ii) Exercising Product name, e.g. Number of Exercise price per call option securities unit (Note 5) (d) Other dealings (including new securities) (Note 4) Nature of transaction Details Price per unit (Note 8) (if applicable) (Note 5) 4. OTHER INFORMATION None Agreements, arrangements or understandings relating to options or derivatives Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated. Is a Supplemental Form 8 attached? (Note 9) YES Date of disclosure 07 August 2009 Contact name Geoff Smith Telephone number 020 7116 2913 If a connected EFM, name of offeree/offeror with which connected If a connected EFM, state nature of connection (Note 10) Notes The Notes on Form 8.3 can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk SUPPLEMENTAL FORM 8 DETAILS OF OPEN POSITIONS (This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate) OPEN POSITIONS (Note 1) Product name, Written or Number of securities Exercise price Type, e.g. Expiry date e.g. call option purchased to which the option (Note 2) American, or derivative relates European etc. Option Purchased -2,900 55.0000 AMER 22/01/2011 Option Purchased -39,600 40.0000 AMER 22/08/2009 Option Purchased -200 35.0000 AMER 21/11/2009 Option Purchased -200 25.0000 AMER 20/02/2010 Option Purchased -400 35.0000 AMER 22/01/2011 Option Purchased -500 20.0000 AMER 22/08/2009 Option Purchased -700 40.0000 AMER 16/01/2010 Option Purchased -800 40.0000 AMER 20/02/2010 Option Purchased -1,400 30.0000 AMER 22/01/2011 Option Purchased -1,900 30.0000 AMER 21/11/2009 Option Purchased -2,000 22.5000 AMER 22/08/2009 Option Purchased -2,100 25.0000 AMER 22/01/2011 Option Purchased -100 17.5000 AMER 22/08/2009 Option Purchased -2,800 25.0000 AMER 16/01/2010 Option Purchased -100 22.5000 AMER 22/01/2011 Option Purchased -3,000 35.0000 AMER 20/02/2010 Option Purchased -4,300 50.0000 AMER 22/01/2011 Option Purchased -4,400 55.0000 AMER 16/01/2010 Option Purchased -4,600 25.0000 AMER 16/01/2010 Option Purchased -4,700 40.0000 AMER 21/11/2009 Option Purchased -5,200 35.0000 AMER 16/01/2010 Option Purchased -9,100 35.0000 AMER 19/09/2009 Option Purchased -10,400 30.0000 AMER 22/08/2009 Option Purchased -10,900 30.0000 AMER 22/08/2009 Option Purchased -16,000 40.0000 AMER 19/09/2009 Option Purchased -23,600 25.0000 AMER 22/08/2009 Option Purchased -2,200 35.0000 AMER 22/08/2009 Option Purchased 600 35.0000 AMER 21/11/2009 Option Purchased 22,400 25.0000 AMER 22/08/2009 Option Purchased 6,900 30.0000 AMER 16/01/2010 Option Purchased 4,700 35.0000 AMER 22/08/2009 Option Purchased 4,700 20.0000 AMER 16/01/2010 Option Purchased 4,200 30.0000 AMER 16/01/2010 Option Purchased 2,700 45.0000 AMER 21/11/2009 Option Purchased 2,600 50.0000 AMER 16/01/2010 Option Purchased 2,500 45.0000 AMER 16/01/2010 Option Purchased 1,800 40.0000 AMER 22/01/2011 Option Purchased 1,600 30.0000 AMER 21/11/2009 Option Purchased 1,600 25.0000 AMER 19/09/2009 Option Purchased -100 17.5000 AMER 16/01/2010 Option Purchased 900 35.0000 AMER 16/01/2010 Option Purchased 87,900 35.0000 AMER 22/08/2009 Option Purchased 600 22.5000 AMER 22/08/2009 Option Purchased 400 50.0000 AMER 21/11/2009 Option Purchased 300 40.0000 AMER 21/11/2009 Option Purchased 200 15.0000 AMER 22/01/2011 Option Purchased 100 35.0000 AMER 20/02/2010 Option Purchased 100 22.5000 AMER 22/01/2011 Option Purchased 100 20.0000 AMER 16/01/2010 Option Purchased 100 17.5000 AMER 22/01/2011 Option Purchased 100 15.0000 AMER 16/01/2010 Option Purchased 100 12.5000 AMER 22/01/2011 Option Purchased -100 25.0000 AMER 21/11/2009 Option Purchased 1,100 20.0000 AMER 22/08/2009 Notes 1. Where there are open option positions or open derivative positions (except for CFDs), full details should be given. Full details of any existing agreements to purchase or to sell should also be given on this form. 2. For all prices and other monetary amounts, the currency must be stated. For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk

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Barclays (BARC)
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