There can’t be many albums that get metal fans’ collective excitement up as much as Slayer’s Reign In Blood does, which is why it seemed like everyone with even the slightest metal tinge to their record collection in the South of England decamped to North London last week to catch Slayer perform arguably their best (and certainly most important) album in full at All Tomorrow’s Parties’ I’ll Be Your Mirror festival at Alexandra Palace. Gary Wolstenholme doesn’t even live in the South, but he still made the trek down from his native Sheffield to take photos of it for us.