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                                                                    EXHIBIT 99.8

                        [LETTERHEAD OF UBS WARBURG LLC]

     UBS Warburg LLC ("UBS Warburg") hereby consents to the inclusion of the
opinion letter of UBS Warburg as Annex 8 to, and to the reference thereto under
the captions "SUMMARY -- Opinions of ABN AMRO Incorporated and UBS Warburg LLC"
and "THE SPLIT-OFF AND MERGER AND RELATED TRANSACTIONS -- Opinions of ABN AMRO
Incorporated and UBS Warburg LLC" in, the Proxy Statement/Prospectus of
Inverness Medical Technology, Inc. ("Inverness") and Johnson & Johnson relating
to the proposed restructuring, split-off and merger transaction involving
Inverness and Johnson & Johnson, which proxy statement/prospectus is part of the
Registration Statement on Form S-4 of Johnson & Johnson and the Registration
Statement on Form S-4 of Inverness Medical Innovations, Inc. In giving such
consent, we do not admit that we come within the category of persons whose
consent is required under, and we do not admit that we are "experts" for
purposes of, the Securities Act of 1933, as amended, and the rules and
regulations promulgated thereunder.

                                          By: /s/    UBS WARBURG LLC
                                            ------------------------------------
                                                      UBS WARBURG LLC

New York, New York
August 10, 2001