Weird Bandwidth issue

[Danny11616]

Hi, I have discovered an issue yesterday while I was managing my own network. I am supposed to be on 70Mbs download but yesterday and today I have discovered that it has been somewhat restrictred to 35Mbs. I have reset the hub and my Deco Mesh network and this still hasn't resolved the issue. 

I have done the Network test to the house through's sky's website and it says I am supposed to be getting the full download speed in my house as well but I am not. Is there something going on at the moment that could be restricting my network that I am not aware of?