PR guru Marcel Knobil thinks Ed's popularity can be linked to his humble persona and "raw talent".
He said: "Ed is an extremely talented individual who demonstrates it is not always about the packaging but about the perfect product. People such as him, Adele and Sam Smith give less credence to glamour and just display raw talent."
Meanwhile, Ed previously credited his success to hard work and persistence.
He said: "Persistence gets you wherever you want to go. My dad always said, 'Nothing ventured, nothing gained.' It was never, 'It either works or it doesn't', you don't stop until it works, basically.
"I applied that to the 'Thinking Out Loud' video, rehearsing five hours a day thinking, 'Why the f**k am I learning to dance? I make the music, someone else can dance.'
"But I set out to do it and I did it. If you feel like you should do something but it's a risk, just f***ing do it. If it's positive, obviously. Don't do anything bad!"
-Bang! Showbiz