The 34-year-old Australian actor, producer and director, who played Mitch McColl on the soap from 1999 until 2001 but then became series producer in 2007, took to his Twitter page to tell his former cast and crew mates that he missed them as they returned to the set after the Christmas break.
Welsh wrote on the microblogging site: "Good luck to my #homeandaway mates back to work today. All the best for another great year, especially new producer Lucy and @Louise_Bowes (sic). Missing you guys already. BTW - water temp in Coogee is around the 22 mark."
When various fans expressed their shock and asked him to confirm if he had quit his role as producer, he wrote: "Yep, I have left Home and Away. The brilliant Lucy Addario is the new producer and @Louise_Bowes continues as script producer. Thanks for all the support and well wishes. Working on HAA was a privilege - best 12 yrs of my life! Thanks all. As for future...We'll see!"
Welsh's post was retweeted by Emily Symons, who plays Marilyn Chambers in Home and Away. Lisa Gormley, who is best known as Bianca Scott on the show, wrote back to him: "Miss you already big man! Have fun x."
Welsh has not yet revealed what his next television project will be. He has previously worked on All Saints and Blue Heelers.
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