3:24 PM PT -- Piers is speaking for the first time since walking off the set and bidding goodbye to "Good Morning Britain" ... saying his late manager John Ferriter would approve of his move.
12:04 PM PT -- Ofcom -- the UK's media regulator -- says it has launched an investigation into Monday's episode of "Good Morning Britain" under its "harm and offence rules." The media regulator says it received more than 41k complaints following Monday's program.
You'll recall Piers, among other things, said he didn't believe Meghan's claims of racism against the Royal Family.
10:27 AM PT -- Piers Morgan's on-set dustup with a fellow co-host appears to have stung deeper than many realized, because the longtime broadcaster is packing his bags and leaving the show entirely.
A statement was just released with the news, reading ... "Following discussions with ITV, Piers Morgan has decided now is the time to leave Good Morning Britain." It's unclear if he quit or got the boot -- but either way ... PM is OUT.
That's pretty spectacular considering he's been a lead anchor since 2015. Helluva run ... which is now over.
Piers Morgan's throwing up his hands and saying 'good day' on the set of his own show, because a co-host called him out to his face about constantly bashing Meghan Markle.
Good Morning Britain/ITV
TV presenter and weatherman Alex Beresford was going in on Piers during a 'Good Morning Britain' segment ... calling his comments about Meghan in the aftermath of her Oprah interview "diabolical" and accusing him of having it out for her no matter what.
Beresford made the point that aside from their wedding day, Meg and Harry haven't much good press at all in the UK -- and he suggested Piers played a big part in that.
Then came the crucial blow that forced Piers' hand -- Beresford seemed to spill some insider info ... saying he knew Piers had been pals with Meghan once upon a time, but that at one point or another ... she cut him off. Beresford implies that's why Piers is always trashing her.
Morgan then got up and said he was done, walking off while Beresford continued going off to others on set.