TV advertising in the United Kingdom will decline one percent after falling four percent last year, and should be flat next year, according to WPP's Group M media planning and buying arm. Radio advertising will be flat this year and grow one percent in 2008, the group predicts.

National newspaper advertising is expected to fall three percent this year, but improve to a two percent fall in 2008. Regional newspapers, however, will have a four percent decline this year and the next, the group stated.

Growth of Internet advertising will slow down from 48 percent last year to 34 percent this year, and is estimated to drop to 30 percent growth in 2008. The report said the slowdown is expected to continue.