Holland (61) sailed from the North Pole to the South Pole in his 71ft yacht Celtic Spirit of Fastnet in 2005. The owner of the Four Star Pizza chain has a myriad of business interests, although the bulk of his fortune is tied up in hotels and hotel management.
He owns the Ampleforth group, which owns the Bailey pub and the Fitzwilliam in Dublin. Last year it spent €23m to buy another Fitzwilliam hotel, this time in Belfast, which it had managed for a number of years. He bought a €4.6m loan associated with Four Star Pizza back from Danske Bank in 2013.