Gently punches above his weight; 7 TV treats of the week.
But there is one thing he just can't bear about working on the show.
"God, that haircut," says the 39-year-old of the moptop he sports in the series. "It does my head in!
I've had enough of that fringe," he adds, laughing.
With the fringe slicked back from his face, however, Ingleby can at least go undetected when he's out and about - unlike his co-star, Martin Shaw.
Instantly recognisable as the titular detective, Martin is also still approached about the uncompromising Judge John Deed. Despite being cancelled eight years ago, the series still has "an enormous following".
But Martin has firm views on watching the repeats when they air.
"I try not to watch, seeing as I don't get paid for it [repeats]," he says. "Sorry, did I say that out loud?" But with fresh episodes of Inspector George Gently starting this month, a six million-strong audience and presumably a payday looming for his work on the series, being spotted is just part and parcel of his job.
Crediting Inspector George Gently's success to the writing and the character-driven stories, both actors relished tackling some challenging subjects and scenes in the new series.
Except for one maybe, which saw Martin, also famed for his role in The Professionals, having to film an "incredibly difficult" set-to in the boxing ring, as his character lets off steam after a hard day's work.
"Professional boxers do it for 45 minutes; I was boxing for fourand-a-half hours, so it played hell with my shoulder," grumbles the 70-year-old, in his just detectable Brummy burr.
"You lead with your left hand, but the stunt arranger asked me to do a few right hooks [as well].
The guy I was hitting used to be a professional boxer, and he was saying, 'Hit me, hit me, hit me', [so I went], 'Fair enough' - bang!
"And I then felt this go," he recalls, lifting his hand.
Six months on and Martin's hand "still hasn't recovered and is still swollen", he says, slowly waggling his fingers to prove his point.
"That's dedication," notes Lee Ingelby.
Dedicated as Martin is to his craft, he was relieved to hang up his boxing gloves, and delve into the less physically demanding plots of this series instead.
One episode sees Gently and Bacchus investigating a rape complaint.
"It's not just about the 'whodunnit', it's about the characters and what was happening at the time," explains Martin, who isn't a world away from Gently in his dapper shirt and braces.
The story throws up the differences between the two detectives' attitudes, with "old-fashioned" Bacchus not taking the woman's complaint seriously, and Gently having a more modern approach.
"Bacchus is going, 'You're wasting my time here, perhaps you were asking for it, you did lead him on', and not taking it seriously," explains Ingleby.
"That's his ignorance coming through. Gently, of course, takes it seriously and opens his [Bacchus'] eyes. Luckily, he does learn from it."
With a 30-year age gap between the actors, naturally, the father-son comparison crops up.
"I'm the father," jokes Burnley-born Ingleby, who also starred in 2014 BBC drama Our Zoo.
"We're mates," he adds - and Martin agrees.
"The important thing is it's a very affectionate company," says the older actor. "Him and me, and Lisa [McGrillis] as well and Simon Hubbard, we're the four regulars.
"And it transfers onto our guest artists as well. Both Lee and me have this ethos, which is you need to be kind, respectful and welcoming to everybody, because we've all had the experience of walking into a show where that's not the case - it's just hard to work, you know - and it makes it more comfortable and happy for everybody."
Having spent all his career on stage and screen, Martin - who like Ingleby, studied at the London Academy Of Music And Dramatic Art (Lamda) - is even more convinced that good old-fashioned manners are vital for producing great performances.
He recalls how he was recently asked to speak to some students at the prestigious performing arts school, and give them some advice.
But Martin, who has previously spoken out about his misgivings on the lengthy commissioning process involved with Inspector George Gently, didn't give the usual tips.
"The first piece of advice I gave them, was be kind," he says.
"They all thought it was going to be about how to stand, how to breathe, how to hit your mark - and all that's important, but everything flows from kindness, because it's a very close-knit atmosphere on set.
"It's nearly always very tense, everybody's tired and stressed, and if you can be as kind as possible, it really helps a lot."
It's also helpful if you can "tell a lot of jokes - like him", he adds, gesturing towards his colleague. Though being of the "gobsmacking" nature, those jokes are not being shared today.
"It just helps with the enjoyment," says Ingleby.
Despite the on-set friendliness and appeal of the storylines, the actors have differing views on whether they should start the cameras rolling on a ninth series.
For Martin it's a no ("Not for me"), but his younger colleague would be happy for the series to continue.
"Get out the flares," says Lee, laughing. "It'd be interesting to see where it would go if it carried on into the Seventies. Bit of glam rock, I'd like to see that."
I | | Inspector George Gently returns to BBC One on Wednesday at 8p
Bacchus and Gently |examine a crime scene
Lee |Ingelby (John Bacchus) loves the fashions - apart from the haircut
Striking out: |Martin Shaw had to suffer for his art in this series of George Gently