Advertising.com now reaches 26.9m unique users - almost 90% of the UK's internet population - according to figures from comScore Media Metrix.
Its nearest rival is MediaBrokers, which reaches 22m uniques, 73.5% of the UK market. ValueClick reaches 68.4% of the UK's internet users.
Advertising.com, which is owned by AOL, has been the largest UK network for some time, and also holds the number one position in the US, reaching 85% of US internet users in February 2007.
We estimate that the UK market for online ad networks doubled in size to around £120m during 2006, from £60 million in 2005. Spending on ad networks last year represented up to 25% of overall online display ad spend.
For more information about this sector, and profiles of 21 leading UK ad networks, see our Online Advertising Networks Buyer's Guide 2007 .
Graham Charlton is Editor at Econsultancy. Follow him on Twitter or connect via Linkedin or Google+.
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Online Media Report
The Online Media Report focuses on the online advertising landscape and how media buying has evolved in the last decade. The comprehensive report, which has a US focus but is relevant for a global audience, contains a detailed analysis of the current trends and issues affecting the marketplace, as well as an overview of emerging players such as demand-side platforms (DSPs).
Alternatively, see our Online Advertising Survey or UK Internet Advertising Statistics.
4:46PM on 14th July 2008
OK, these are nice stats, but how do I get targetted traffic for my web site : https://ssl.bidwiz.co.uk/default.asp .
My targetted audience is gamers , smart shoppers etc.
8:07AM on 18th September 2008
I think http://uk.adsmart.net is also well establish ad network which adopted DART technology for Ad serving as Google Adwords. Soon, it will be list in big names of UK ad networks.