Thank you, the cable I'm using is 1.4 and I have swapped them, because at this point in time I'm trying anything!
However, I'm not sure it will stop the "No Internet Connection" messages and the screens appearing with the Vodafone Logo "You're not subscribed to this channel" in large text with the "No Internet Connection" in the top right of the screen. We get the signal from the Vodafone TV to the TV screen fine. Its just that the Vodafone TV looses its connection to the outside world very regularly.
I have one TV that is ethernet connected and the other uses the wifi extenders on bridge mode. This happens with both TVs, so no difference with the type of connection.
When they work, I'm very impressed with the whole setup. But they just require too many resets a day to be considered reliable. (I work as an airline pilot, so having reliable equipment to me is essential!).