Since it was revealed Ralf, 44, had departed the show after four years , the rumour mill has swirled as to who will replace him.
Now MailOnline takes a look at all the stars who have been tipped.
Where the cast of Gavin and Stacey are now as return rumoured liverpoolecho.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from liverpoolecho.co.uk Daily Mail and Mail on Sunday newspapers.
Starring some already well-known actors, it also catapulted others into becoming household names with many of its cast members going on to forge very successful careers.