Transport tycoon Sir Brian Souter has accused Google of stopping links to his website appearing when people search for it.
He claims that on 13 August, the site mysteriously disappeared from results returned for a search on “Brian Souter”.
Sir Brian has now vowed to launch a campaign to end what he dubbed “search engine censorship”.
Google declined to comment on the case but said site rankings were calculated from many different measures.
The site in question, Brian Souter | Official Biography | Personal Web Site details Sir Brian’s life, includes a picture gallery and gives news updates about the Stagecoach founder.