Google leads in UK search engine spending for the first quarter of 2008, according to data released by Efficient Frontier. The search engine enjoyed 85% of the market. Click-Through Rates (CTR) actually saw a slight decline for Google over Q4 2007, but the ROI increased by 14%.
The same couldn't be said for Yahoo. Yahoo's search advertising market share was 11.9%, down 0.5% from Q4 2007. CTR declined 38% quarter-over-quarter and ROI declined 6%.
MSN increased their market share by 0.4% in Q1 to reach a 3.5% market share in the UK. While MSN's ROI dropped 10%, it was still 17% higher than Google's ROI.