Mellor has already finished filming but his departure won’t be marked on screen, according to the actor.
GP Matt was very much a background character and Mellor told the Sunday Mercury this prompted his decision to leave.
“There were quite long periods when I didn’t appear at all, so I realised it was time to leave. They didn’t try to make me stay – they admitted they didn’t have any solid plans for the doctor and it would be more of the same.
“I thought, ‘Fair enough, you’ve been great but it’s time to go’. They just weren’t progressing my character as much as I would like. As an actor you want some kind of consistency and to be busy.
“I wasn’t being integrated into the rest of the street. It was great when Matt started dating Tina, but it never came to any real fruition.”
Mellor added that his character could return in future as bosses haven’t killed him off.
“It’s a shame Matt doesn’t get an exit storyline – they just stopped using him, unfortunately. But they’re not killing him off, so you never know, he could return one day.”
Despite leaving the soap, the actor is already working on a new project – a production of the play A Murder Has Been Arranged.