Hello again,
I'm going to give this a go
http://testmy.net/auto
You can set it up so that it automatically tests your internet speed on the hour, every hour, and logs the results. I'm gonna see what times it keeps happening, then submit them to ofcom.
I urge you guys to possibly try it, so that we can see if there are any similarities, even among different Internet Service Providers.
All the best
NotImpressed1bit