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               10 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       2,205,464     2.74%       136,183       0.17%
securities
(2) Derivatives            0     0.00%
(other than
options)
(3) Options and      129,800     0.16%       155,200       0.19%
agreements to
purchase/sell
Total              2,335,264     2.90%       291,383       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      400                  33.6525
Purchase      100                  33.61
Purchase      50,000               33.6118
Purchase      200                  33.595
Purchase      200                  33.635
Purchase      100                  33.55
Purchase      100                  33.6
Purchase      100                  33.62
Purchase      100                  33.64
Purchase      1,700                33.62823529
Purchase      500                  33.43
Purchase      100                  33.63
Purchase      100                  33.39
Purchase      400                  33.6175
Purchase      1,300                33.63
Purchase      100                  33.68
Purchase      300                  33.55666667
Purchase      100                  33.641
Purchase      44                   33.5800 USD
Purchase      100                  33.641
Purchase      500                  33.43
Purchase      2,100                33.61333333
Purchase      110                  33.5800 USD
Purchase      600                  33.615
Purchase      20                   33.61
Purchase      100                  33.61
Purchase      150                  33.58
Purchase      950                  33.65736842
Sale          340                  33.5800 USD
Sale          726                  33.5800 USD
Sale          100                  33.6800 USD
Sale          1,844                33.68240781
Sale          600                  33.68
Sale          5,000                33.6261
Sale          200                  33.675
Sale          100                  33.6
Sale          100                  33.641
Sale          100                  33.641
Sale          200                  33.535
Sale          100                  33.68
Sale          100                  33.61
Sale          1,400                33.6264
Sale          500                  33.43
Sale          1,200                33.65166667
Sale          510                  33.32179412
Sale          900                  33.67555556
Sale          1,800                33.62444444
Sale          200                  33.555
Sale          276                  33.75304348
Sale          500                  33.43
Sale          100                  33.64
Sale          16                   33.5800 USD
Sale          1,300                33.63
Sale          44,356               33.60438272
Sale          1,000                33.69
Sale          100                  33.39

(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                         11 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   -3,000                 35.0000          AMER           20/02/2010
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   -700                   40.0000          AMER           16/01/2010
Option            Purchased   -1,400                 30.0000          AMER           22/01/2011
Option            Purchased   -2,000                 22.5000          AMER           22/08/2009
Option            Purchased   -2,100                 25.0000          AMER           22/01/2011
Option            Purchased   -2,300                 35.0000          AMER           22/08/2009
Option            Purchased   -40,000                40.0000          AMER           22/08/2009
Option            Purchased   -2,900                 55.0000          AMER           22/01/2011
Option            Purchased   -100                   25.0000          AMER           21/11/2009
Option            Purchased   -3,000                 30.0000          AMER           21/11/2009
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   -10,500                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   -2,800                 25.0000          AMER           16/01/2010
Option            Purchased   600                    35.0000          AMER           21/11/2009
Option            Purchased   7,500                  35.0000          AMER           22/08/2009
Option            Purchased   6,900                  30.0000          AMER           16/01/2010
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   1,100                  40.0000          AMER           20/02/2010
Option            Purchased   -100                   17.5000          AMER           16/01/2010
Option            Purchased   900                    35.0000          AMER           16/01/2010
Option            Purchased   -100                   22.5000          AMER           22/01/2011
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   87,900                 35.0000          AMER           22/08/2009
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