Rubell Khan, general manager of The Philharmonic, said: "Results Day is one of the biggest celebrations in the calendar and we wanted to make this year’s event bigger than ever. "Mathew Horne is an icon for so many people, and his Gavin & Stacey connection makes him the perfect person to help us mark the occasion. The event will feature a headline DJ set, immersive lighting, confetti, and spectacular CO₂ effects creating a festival atmosphere in the heart of Cardiff. A-level results day marks the culmination of months of study and anticipation for students across the UK. The main event at The Philharmonic will begin at 9pm, with celebrations taking place throughout the day across all Croeso venues in Cardiff.