LONDON, January 25 /PRNewswire-FirstCall/ --
    Summary
    Month of December 2004
    The business information market serving the technology industry, measured
in terms of advertising page volumes, decreased by 6.0% in the month of
December compared to December 2003. CMP Media's continuing technology
publications recorded a 3.3% decrease against December 2003.
    CMP Media's market share, compared to 2003, increased - its continuing
titles held a share of 24.6% in December 2004 up from 23.9% in December 2003.
    Calendar Year to December
    The market decreased by 5.9% compared to the year to December 2003. CMP's
continuing titles, in the year to December 2004, recorded a 3.9% decrease in
advertising page volumes against the year to December 2003.
    Market share of CMP Media's continuing titles year to date was 26.9% up
from 26.4% in the prior year period.
    MARKET SEGMENT - ADVERTISING PAGE VOLUMES
    MONTH OF December 2004

                                                            2004      2003
                                                 Change   Market    Market
                                 2004     2003 04 vs 03    Share     Share
                                Pages    Pages        %        %         %

    CMP Media
    Continuing                  1,222    1,264    -3.3%    24.6%     23.9%
    Discontinued                    0       94              0.0%      1.8%

    CMP Media Total             1,222    1,358   -10.0%    24.6%     25.7%

    Whole Market
    Continuing                  4,976    5,202    -4.3%   100.0%     98.2%
    B2B Tech
    Publications                4,316    4,526    -4.6%    86.7%     85.4%

    General Business              660      676    -2.4%    13.3%     12.8%

    Discontinued                    0       94              0.0%      1.8%
    Total Market                4,976    5,296    -6.0%   100.0%    100.0%


    MAJOR CMP TITLES

                                   December 2004   YTD December 2004
                             +/- Pages  % Change +/- Pages  % Change

    Information Week             -45.6     -25.1     -11.8      -0.5
    EE Times                     -39.1     -17.0     -80.7      -2.5
    Dr Dobb's                     -0.8      -2.1     -68.2     -11.8
    Network Computing             -2.8      -2.9    -127.9      -7.8
    Network Magazine             +17.8     +56.3     -91.4     -17.0
    CRN                          -23.2     -11.1    -294.4     -10.8
    VAR Business                  -7.2      -6.9     -78.8      -5.2


    CALENDAR YEAR TO December 2004

                                                            2004      2003
                                                 Change   Market    Market
                                 2004     2003 04 vs 03    Share     Share
                                Pages    Pages        %        %         %

    CMP Media
    Continuing                 17,828   18,551    -3.9%    26.9%     26.4%
    Discontinued                   66    1,759              0.1%      2.5%

    CMP Media Total            17,894   20,310   -11.9%    27.0%     28.9%

    Whole Market
    Continuing                 66,093   68,200    -3.1%    99.9%     97.0%

    B2B Tech
    Publications               59,410   61,170    -2.9%    89.8%     87.0%

    General Business            6,683    7,030    -4.9%    10.1%     10.0%

    Discontinued                   66    2,079              0.1%      3.0%
    Total Market               66,159   70,279    -5.9%   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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