Hello peak_a_bu and welcome to the forum
For future reference, please note that this particular thread is dedicated to Gwen and/or Angel Coulby as an actress. If you have any questions, these should be addressed to the Q&A thread in the first instance.
In case of any doubt, you can go through the Posting Rules threads, which are also pinned at the top of the page, so you can know where you post what. You can also pm me anytime.
In answer to your question, the show has been recommissionned for a 4th season and filming has started recently. The 4th series will comprise 13 episodes and will air in the UK in the autumn.
Have fun around!