Macquarie has put Bristol International airport up for sale as the embattled Australian infrastructure giant scrambles to raise cash.

The group is understood to have sounded out potential buyers for the airport, which carried more than 6m passengers in 2008.

Industry sources say possible bidders include Prudential’s M&G’s infrastructure fund and Fortis, which recently bought Belfast’s George Best airport.

The airport was valued at around €320m (£283m) in 2006, but interested bidders are likely to offer much less now.

Sunday Times