LONDON, September 24 /PRNewswire-FirstCall/ -- Summary
    Month of August 2004
    The business information market serving the technology industry, measured
in terms of advertising page volumes, decreased by 5.4% in the month of
August compared to August 2003. CMP Media's continuing technology
publications recorded a 7.1% decrease against August 2003.
    CMP Media's market share, compared to 2003, decreased - its continuing
titles held a share of 27.7% in August 2004 down from 28.2% in August 2003.
    Calendar Year to August
    The market decreased by 6.6% compared to the year to August 2003. CMP's
continuing titles, in the year to August 2004, recorded a 3.8% decrease in
advertising page volumes against the year to August 2003.
    Market share of CMP Media's continuing titles year to date was 27.3% up
from 26.5% in the prior year period.
    Rolling twelve months to August 2004
    The market decreased by 8.0% in advertising page volumes in the twelve
months ended August 2004 compared to the twelve months ended August 2003. CMP
Media's continuing High Tech publications recorded a 3.8% decrease in the
same period.
    MARKET SEGMENT - ADVERTISING PAGE VOLUMES
    MONTH OF August 2004

                                                            2004      2003
                                                 Change   Market    Market

                                 2004     2003 04 vs 03    Share     Share
                                Pages    Pages        %        %         %
    CMP Media
    Continuing                  1,333    1,435    -7.1%    27.7%     28.2%
    Discontinued                    0      102              0.0%      2.0%

    CMP Media Total             1,333    1,537   -13.3%    27.7%     30.2%

    Whole Market
    Continuing                  4,822    4,992    -3.4%   100.0%     97.9%
    B2B Tech
    Publications                4,495    4,607    -2.4%    93.2%     90.3%

    General Business              327      385   -15.1%     6.8%      7.6%

    Discontinued                    0      106              0.0%      2.1%
    Total Market                4,822    5,098    -5.4%   100.0%    100.0%


    MAJOR CMP TITLES

                                 August 2004       YTD August 2004
                               + Pages % Change    + Pages % Change
    Information Week              +7.3 +4.7         +103.8   +6.6
    EE Times                     +76.2 +36.8          +6.1   +0.3
    Dr Dobb's                     +4.7 +14.1         -54.8   -13.5
    Network Computing            -13.7 -13.7         -42.6   -4.4
    Network Magazine              -7.0 -20.9         -25.2   -7.9
    CRN                          -56.5 -22.4        -193.1 -11.3
    VAR Business                 +18.8 +17.5         +13.5   +1.4


    CALENDAR YEAR TO August 2004

                                                            2004      2003
                                                 Change   Market    Market

                                 2004     2003 04 vs 03    Share     Share
                                Pages    Pages        %        %         %
    CMP Media
    Continuing                 11,461   11,918    -3.8%    27.3%     26.5%
    Discontinued                    0    1,127              0.0%      2.5%

    CMP Media Total            11,461   13,045   -12.1%    27.3%     29.0%

    Whole Market
    Continuing                 41,956   43,495    -3.5%   100.0%     96.8%
    B2B Tech
    Publications               38,054   39,309    -3.2%    90.7%     87.5%

    General Business            3,902    4,186    -6.8%     9.3%      9.3%

    Discontinued                    0    1,435              0.0%      3.2%
    Total Market               41,956   44,930    -6.6%   100.0%    100.0%


    TWELVE MONTHS to Date

                                                        2004    2003
                               2004     2003  Change  Market  Market
                              Pages    Pages    %    Share % Share %
    CMP Media
    Continuing               18,271   19,000  -3.8%    27.1%   26.0%
    Discontinued                470    1,926            0.7%    2.6%
    CMP Media Total          18,741   20,926 -10.4%    27.8%   28.6%

    Whole Market
    Continuing               66,823   70,098   -4.7%   99.3%   95.9%

    B2B Tech Publications    60,077   63,017   -4.7%   89.3%   86.2%

    General Business          6,746    7,081   -4.7%   10.0%    9.7%

    Discontinued                483    3,024            0.7%    4.1%
    Total Market             67,306   73,122   -8.0%  100.0%  100.0%


    Source - IMS: Auditor
    Notes to Editors:
    CMP MEDIA LLC
    CMP Media LLC (http://www.cmp.com) is a leading integrated media company
providing essential information and marketing services to the entire
technology spectrum -- the builders, sellers and users of technology
worldwide. Capitalising on its editorial strength, CMP is uniquely positioned
to offer marketers comprehensive, integrated media solutions tailored to meet
their individual needs. Its diverse products and services include newspapers,
magazines, Internet products, research, direct marketing services, education
and training, trade shows and conferences, and custom publishing.
    BASIS OF COMPILATION OF STATISTICS
    The statistics, which are the main subject of today's release, are
independently compiled by IMS/Auditor. The basis of compilation includes:
    - pages are hand counted
    - supplement ads are counted if in over 50% of circulation
    - house ads are not counted
    - inserts are counted if bound in publication
    - the database will continually be updated as more accurate information
arrives
    All CMP High Tech publications are tracked. CMP determines the
competitive set of publishing titles which are measured on its behalf by IMS
Auditor and periodically adjusts the population to ensure that it is properly
representative of the changing US business technology advertising market in
which CMP competes.
    Note: that these statistics represent only total advertising page volumes
as counted above, they do not represent paid advertising page volumes nor do
they show the revenue yields which the operators in these market segments
have achieved.
    This press release includes statements which are not historical facts and
are considered "forward-looking" within the meaning of Section 27 of the
Securities Act of 1933, as amended. These forward-looking statements reflect
UBM's current views about future events, business and growth strategy and
financial performance. These forward-looking statements are identified by
their use of terms and phrases such as "believe," "expect," "plan,"
"anticipate," "on target" and similar expressions identifying forward-looking
statements. Investors should not rely on forward-looking statements because
they are subject to a variety of risks, uncertainties and other factors that
could cause actual results to differ materially from UBM's expectations. UBM
expressly does not undertake any duty to update forward-looking statements.
Management does not attempt to update forecasts unless conditions materially
change.

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