What has the garage to do with it?
Powerline adapters normally work provided you only have a single mains feed to the house, which is normally the case, unless people have a separate annex with its own mains feed.
The XBOX can be connected to one of the Ethernet ports on the PLA, eliminating the wireless connection totally.
Sorry our main port for the bt hub wifi is in the converted garage which is actually part of the house
That is correct, one plugs into the mains socket near the home hub, and is connected via a short Ethernet cable.
The other end is plugged in next to the Xbox, and another short Ethernet cable goes from that unit, to the LAN port on the Xbox. Wireless is not involved with this connection, but the PLA will transmit wireless, so you may find it covers the rest of the house, without any more units.
The Xbox will work better if its not relying on a wireless connection.
The Euro 5 relies on a wireless connection between the units, and will most likely struggle to work if there is a poor signal in the affected room. They are not the best solution in that case.
Thanks so much so would this package be suitable in your opinion? I'm sure I'm able to return the eeros anyway as purchased on amazon.
TP-Link TL-PA9020PKIT 2-Port Gigabit Passthrough Powerline Starter Kit, Data Transfer Speed Up to 2000 Mbps, Ideal for HD Video Streaming and Online Gaming, No Configuration Required, UK Plug
Yes, that would be the correct way to do it.
The item you pointed out, does not transmit wireless as well.
This one is cheaper TP-Link TL-PA7017P KIT £37.49
Assuming you do not want extra wireless coverage.