<P> Following the success of series one , BBC ordered a second series , but it looked uncertain due to Samberg 's busy schedule . In February 2014 , it was announced that Samberg would not return for the second series , with Taylor Lautner replacing him as Cuckoo 's long - lost lovechild Dale . The second series began on 7 August 2014 . On 4 April 2016 , Cuckoo was commissioned for two more series . Series 4 wrapped up production on 18 March 2018 , confirmed by Lautner via social media . It was released on 2 August 2018 . </P>
<P> Following the success of series one , BBC ordered a second series , but it looked uncertain due to Samberg 's busy schedule . In February 2014 , it was announced that Samberg would not return for the second series , with Taylor Lautner replacing him as Cuckoo 's long - lost lovechild Dale . The second series began on 7 August 2014 . On 4 April 2016 , Cuckoo was commissioned for two more series . Series 4 wrapped up production on 18 March 2018 , confirmed by Lautner via social media . It was released on 2 August 2018 . </P>
when does the next season of cuckoo come out
when does the next season of cuckoo come out
2 August 2018
2 August 2018