The "enormous progress" in cancer treatment means the disease is no longer considered a "death sentence", the chief executive of Cancer Research UK has told ITV News.
Harpal Kumar also urged people with symptoms to go and see their doctor as "more often than not" there will be effective treatment available.
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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.