"Cairn Energy, the South Asia-focused oil company, was the top blue-chip riser, spiking 223p to £29.89 on rumours of a £40-a-share bid from Italian oil giant Eni. However, dealers were sceptical, noting that Eni has its hands full, having just acquired Burren Energy."
http://www.telegraph.co.uk/money/main.jhtml?xml=/money/2008/03/12/cxmktrep112.xml