A recording of the 50th weekly test of 2023 for Ineos' Newton Aycliffe sirens - the model of sirens is unknown, but it uses multiple 10-12 port sirens. It is one that has been filmed several times before, but I wasn't going to turn down the chance to film this one given I could!
https://www.youtube.com/watch?v=ghPdJNUBpb4
More to come soon, I hope...