Business leaders have said political uncertainty about the outcome of the next General Election remains a "major risk to the recovery".
The Confederation of British Industry (CBI) urged politicians to push ahead with boosting the supply of homes and taking decisions on major infrastructure projects.
The major parties need to show they would "stick with what is working" after next year's election, the CBI's chief policy director Katja Hall said, urging them against costly "political positioning".
She added: "(Positioning) must not be allowed to stifle investment, whether it's an unrealistic immigration target, unjustified interventions into specific markets, flirting with leaving the European Union, delaying vital long-term infrastructure projects or restricting labour market flexibility."
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The annual event has earned a place in the record books ahead of the grand final of the 60th anniversary show in Austria this evening.
Local authorities said the move is necessary to "avert the growing number of deaths and increasing harm linked to psychoactive substances".
Some students argued that the centuries-old tradition of wearing gowns, suits and mortarboards to exams was 'archaic' and looked elitist.