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               22 July 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       2,174,600     2.75%         95,362     0.12%
securities
(2) Derivatives            0     0.00%
(other than
options)
(3) Options and      158,400     0.20%         82,600     0.10%
agreements to
purchase/sell
Total              2,333,000     2.95%        177,962     0.23%


(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         200                   32.79
Purchase         100                   32.8225
Purchase         1,600                 32.8
Purchase         200                   32.84
Purchase         10,600                32.9100 USD
Purchase         100                   32.65
Purchase         1,800                 32.59680556
Purchase         500                   32.88
Purchase         100                   32.6
Purchase         1,000                 32.83
Purchase         64                    32.9100 USD
Purchase         2                     32.7
Purchase         7                     32.7
Purchase         100                   32.8225
Purchase         100                   32.89
Purchase         300                   32.81333333
Purchase         100                   32.99
Purchase         100                   32.9100 USD
Purchase         100                   32.83
Purchase         144                   32.9100 USD
Purchase         500                   32.8958
Purchase         100                   32.84
Purchase         160                   32.9100 USD
Purchase         100                   32.59
Purchase         100                   32.943
Purchase         600                   32.88483333
Purchase         760                   32.9100 USD
Purchase         100                   32.8225
Purchase         2,000                 32.9100 USD
Sale             216                   32.8537 USD
Sale             100                   32.8225
Sale             153                   32.9231 USD
Sale             6,300                 32.7978 USD
Sale             1,000                 32.83
Sale             9                     32.7
Sale             177                   32.8537 USD
Sale             541                   32.87005545
Sale             100                   32.59
Sale             100                   32.99
Sale             500                   32.8958
Sale             100                   32.83
Sale             100                   32.99
Sale             700                   32.89314286
Sale             100                   32.97
Sale             2,000                 32.5966
Sale             93                    32.91
Sale             900                   32.82222222
Sale             159                   32.85226415
Sale             1,000                 32.83
Sale             100                   32.86
Sale             100                   32.91
Sale             100                   32.943
Sale             7                     32.92
Sale             100                   32.8225


(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                         23 July 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   -1,300                 30.0000          AMER           22/01/2011
Option            Purchased   -100                   25.0000          AMER           21/11/2009
Option            Purchased   -100                   22.5000          AMER           22/01/2011
Option            Purchased   -100                   17.5000          AMER           16/01/2010
Option            Purchased   -100                   17.5000          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   -500                   20.0000          AMER           22/08/2009
Option            Purchased   -23,600                25.0000          AMER           22/08/2009
Option            Purchased   -600                   40.0000          AMER           16/01/2010
Option            Purchased   100                    17.5000          AMER           22/01/2011
Option            Purchased   -1,700                 30.0000          AMER           21/11/2009
Option            Purchased   -1,900                 55.0000          AMER           22/01/2011
Option            Purchased   -2,000                 22.5000          AMER           22/08/2009
Option            Purchased   -2,500                 25.0000          AMER           16/01/2010
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   -5,400                 35.0000          AMER           22/08/2009
Option            Purchased   -8,400                 35.0000          AMER           16/01/2010
Option            Purchased   -19,100                30.0000          AMER           22/08/2009
Option            Purchased   -600                   40.0000          AMER           20/02/2010
Option            Purchased   1,400                  30.0000          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   6,500                  40.0000          AMER           22/08/2009
Option            Purchased   6,400                  30.0000          AMER           16/01/2010
Option            Purchased   5,900                  35.0000          AMER           22/08/2009
Option            Purchased   4,400                  20.0000          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   2,300                  45.0000          AMER           16/01/2010
Option            Purchased   2,000                  30.0000          AMER           22/08/2009
Option            Purchased   100                    12.5000          AMER           22/01/2011
Option            Purchased   1,500                  40.0000          AMER           21/11/2009
Option            Purchased   100                    15.0000          AMER           16/01/2010
Option            Purchased   900                    35.0000          AMER           16/01/2010
Option            Purchased   900                    25.0000          AMER           22/01/2011
Option            Purchased   600                    22.5000          AMER           22/08/2009
Option            Purchased   400                    50.0000          AMER           21/11/2009
Option            Purchased   200                    15.0000          AMER           22/01/2011
Option            Purchased   100                    35.0000          AMER           21/11/2009
Option            Purchased   100                    35.0000          AMER           19/09/2009
Option            Purchased   100                    22.5000          AMER           22/01/2011
Option            Purchased   100                    20.0000          AMER           16/01/2010
Option            Purchased   87,900                 35.0000          AMER           22/08/2009
Option            Purchased   1,800                  40.0000          AMER           22/01/2011

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