In reply to AlisonSmiles:
hi Alsion, when you say normal line I take it you are currently on copper in which case both upload speed and download speed will normally be much better on fibre but not always.
it depends on a lot of factors, how far you currently are from your exchange at the moment will determine your speed on copper.
how far you are from the street fibre cabinet will mostly determine your fibre speed as it still runs on existing copper from the fibre cab.
how its set up in the house becomes even more important with fibre so ask for an installer to visit if they will do it as recently they are now providing a set it up yourself service with an engineer only visiting the cabinet and not your house.
if you have only 1 socket and no extensions and you router plugs in where the main socket is with nothing teed off then that's the best set up. if it doesn't you can lose significant speeds through the house. ive seen lines lose over 20 meg in a house alone due to teed extension and unfiltered equipment like sky boxes.
sky should also be able to increase your upload speed but it will reduce your download speed to compensate but that may not be an issue depending on how much speed you end up with overall.