As I entered Birmingham’s Villa Park stadium just before 12pm on Saturday to see Black Sabbath’s Back to the Beginning concert – Black Sabbath’s last, and one of the biggest heavy metal shows of all time – an excited steward informed us that we were in for some huge surprises.

The epic 'Back to the Beginning' send-off was held at Villa Park in Birmingham, England, and streamed live globally.

Boozers were decked with purple balloons and flags; murals were everywhere you looked; people donned Ozzy outfits, flooding the streets with battered T-shirts and denim jackets. It felt like a World Cup final for the metal fans who flooded in from every corner of the planet .