I have the same hearing aids (HAs) from the NHS. And I purchased the bluetooth streamer that goes with it from deafequipment website. You have to get the audiologist to program the HAs to connect with the streamer as it requires a unique code to connect.
The bluetooth streamer is absolutely brilliant. I use it all the time as it gives the best sound quality - far better than a loop system. The only problem is that after a while the rechargeable battery life gets shorter and shorter. It barely lasts long enough to watch a film on my iPad now. I've had it for a few years now.