I THINK I found something.
Applying a hot water bottle to my RH ear and jaw every 4 hours, for 10 minutes, and then rub in Voltaren the Osteo gel 12 hourly twice over an hourly period. Then using an app called Relief on my mobile phone, it's a noise generator, resulting in a deep sleep, it becomes so quiet the next day,
It does become louder, at about 10 pm, because I have eaten so I apply a hot water bottle again etc.
I believe it's not my ear but rather my RH jaw.
The ringing is a symptom, not the cause.
The CAT scans I had last week will show more.
Vince.