The distraught dad was hopeful for a reunion with estranged daughter as he desperately wants to meet his grand-children Archie and Lilibet.
During the interview, Thomas admitted he’s previously considered taking legal action against his daughter in order to secure visitation rights to the children.
However, he insisted he wouldn’t want to take things that far: “I don’t want to involve my grandchildren as pawns in a game, they’re not part of the game.
“I mean, they are my grandchildren,” he remarked.
Thomas claimed he was being “ghosted” by his daughter and admitted he would continue to make TV appearances until she agrees to speak to him.
“I’ve made it quite clear until I hear from her until she does speak to me that I’ll continue to do this.
“I will do a show for at least a month if I can get it through and eventually sooner or later she should start talking to me – this is way too childish.
“This is kind of silly. It’s time to talk with each other. We’re family,” he added.
Thomas also hit out at Meghan’s husband Prince Harry, branding his new tell-all book “shameful”.
Thomas claimed: “I think Harry has abandoned the Queen, the royal family, the British people and the Army. He’s abandoned them all.”
Upon seeing the interview, several Good Morning Britain viewers wrote to Ofcom to complain about Thomas’ appearance on the programme.
Meanwhile, others took to Twitter to hit out at the ITV show for speaking to Meghan’s father.
“I thought this rubbish would stop after #PiersMorgan walked off @GMB but alas, #GMB producers are the ones fixated on dragging down #MeganMarkle by interviewing this sick man #ThomasMarkle!! What a shame!!” one viewer fumed.
Another said: “@GMB bringing in Thomas Markle is pretty pathetic. Clearly out of touch with the British public if they think we want to see or hear from that man. Is there really nothing else worth talking about? #GMB are so out of touch.”
“Why does #GMB keep allowing Thomas Markle on the show to gaslight the f**k outta Meghan Markle again.. they guy is a idiot keeps saying he wants to make up with his daughter but yet does interviews slagging her off,” one viewer added.
“I glad l missed that interview on #GMB with Thomas Markle why do they keep having him on the programme for? He got nothing left to say. Richard Madeley was right saying why doesn’t Thomas Markle just not shut up and accept the true about he daughter Meghan,” someone wrote.
Good Morning Britain airs weekdays at 6am on ITV.