U2 can generate a pay cheque of more than €5m in a single night when they play live, according to their tour promoter.

The next date of U2’s mammoth worldwide tour was in doubt today after protesters held up the removal of its custom-built stage from Croke Park.

Die-hard fans have been queuing all night for the best spot at the first of U2’s sell-out Dublin gigs at Croke Park today.