I got the TP-LINK W9980 to work with Sky Fibre!
Thought I may share this as it may help someone in the future. I got the TP-Link W9980 working with Sky Fibre and this is how I did it. I was using the SR102 previously.
You will need the firmware from this URL:
https://www.dropbox.com/s/24lc8mv7g..._up_boot(150413)_2015-04-13_09.06.50.zip?dl=0
Update the W9980 firmware by going to System Tools->Firmware Upgrade and follow the onscreen instructions. The router will reboot and you'll be ready to follow the instructions below.
1. Get the username and password that your Sky router uses. You can use
this link or just google how to get your sky username and password from the Sky router.
2. Login to the admin page of the W9980 and go to "Quick Setup".
a. Set region and timezone to United Kingdom and GMT respectively.
b. Select "xDSL Modem Router Mode".
c. From the list of ISPs, select "others".
d. Set the "L2 Interface Type" to VDSL, enable VLAN ID and set the VID to 101.
e. Select "Dynamic IP"
f. Continue all the way until you've set up your wireless settings and complete the quick setup.
3. Go to Network->WAN Settings and click on "Edit."
a. Click on "Enable MER" and enter your Sky username and password. Once done, click on "Save".
b. The connection should start working automatically, if not, click on "Connect".
Your W9980 should now be connected to Sky. if not, check your username and password!