Second Star Youth Theatre was the official youth theatre, run by Millie Hardy-Sims, of Workington Theatre Royal between 2014 and 2017, before it was taken over and renamed as Theatre Royal Youth in Autumn 2017.

Under Millie's directorship, Second Star Youth Theatre staged many plays between October 2014 ("The Lost Boy", in partnership with Happy Thoughts Drama Company) and "The Wind in the Willows" in June 2017. Over 50 different actors came through Second Star during the three years Millie ran the group, and Second Star recieved many critically acclaimed reviews as well as a local drama group nomination. Many of the young actors who came through Second Star during those years have gone on to study theatre at university, or are now working as professional actors.