The figures, published by the Advertising Association, showed the strongest growth recorded since the end of 2002.
Television and national newspaper advertising, which had been slower to recover than other areas, each showed strong growth for the quarter.
National newspaper advertising was up by 6.5% on constant prices to £499m while television rose by 5.8% to £1.03bn, making it the biggest single medium in the survey.
The only medium to see a fall was direct marketing, which fell by 2.5% in real terms to £539m. It is a rare slide for the DM industry, which has consistently shown rises while other areas of the industry have fallen back.
However, the slip in DM spend is a reflection of the move by marketers to spend more money on newspaper and TV advertising to back their brands rather than on tactical DM campaigns.
Outdoor advertising continued to perform strongly, rising by 12.6% when adjusted for inflation.
Speaking to the FT, Colin Macleod, research director at Warc, said: "We're seeing a recovery, but not a huge boost. We would have made up for the declines in spending since 2000, and barring unseen circumstances, next year we'll be slightly ahead."
The figures were compiled by the World Advertising Research Centre.
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