Humphreys had been part of the Angel of the North’s story “from the very start”.
“It was just incredible to see from it being in pieces on the floor in the factory [in Hartlepool], to actually being erected in Gateshead,” he says.
The 66ft (20m) tall landmark was built on the site of a former coal mine in 1998, during his first few years at PA.
The main thing that has changed since then is the move from film to digital cameras, he says.
“It was a lot more difficult,” Humphreys says.
Film cameras used light to capture images, rather than a digital sensor.
“You were very limited to the number of shots, so you were really relying on your knowledge of the camera, your lighting,” he says.
“Once that moment had gone on film, there wasn’t another chance to get that back.”