TUI Travel PLC ranked as the top online advertiser in the category with over 353.4 million display ad impressions delivered, accounting for 11.4 percent of ads from travel companies in the UK. British Airways plc ranked second with 147.3 million display ad impressions (4.8 percent share) and Air France – KLM was the third largest advertiser with 125.1 million display ads (4.1 percent share) in the UK during March 2012.