Try running iperf between devices connected to those plugs at either end, I suspect you will find the actual results a lot lower unfortunatelyRight found a BT hub 2 I have so will test this now and see what it's like
It appears I'm on contract with BT for another year so it will have to be an upgrade with them going to speak to them and see what deal i can get .
With regards to my powerplugs sees this is what the TP-link app shows me off my desktop computer
Thank you