I have just embedded the videos from storage. I take no responsibility if they are removed at any time. I will check on a regular basis. They will be uploaded as soon after being aired as possible. If you want, you can download them here to watch offline.
They were taken from https://thewatchseries.us/broadchurch-season-3-episode-1 but the website, although free tries to redirect you to other websites even if you accidentally click your mouse or tap on the screen. If you choose to view them there, I accept no responsibility. I have downloaded them as MP4 files and uploaded them from storage.