Sky got me to do a bunch of things at home, im guessing to rule out the possibility of a fault in the home wiring, then they just proceeded to getting an engineer out. They didnt say or admit there was a fault.
Just for back story which i told sky, my net was solid for the first 135 days of getting fibre, synced at 37/7mb without dropping. Then recently it got very intermittent, but returned from about 30mb back to 37mb over a few weeks. In the last few weeks it just got super bad as the stats show, it was synced at 25mb yesterday (for about the last week), today it has synced at 23mb and the errors just keep rolling in.