Thank you, and apologies for not giving those details. There were signs along the diversion from what I recall but it is setup every evening and is taken away every morning so there’s no guarantee it’s the exactly same one day from the next. Equally, I may have just made a mistake.
This is the diversion route I took - marked in purple, and the red circle is the bus gate/camera.
https://drive.google.com/file/d/11a-GsziRDcfDvZ0WE7o7GzHhIEn1QA-R/view?usp=drivesdkFeels a bit harsh when there’s a load of roadworks and the redirection forces drivers the wrong way down roads etc.