As you know from my replies to you this morning and last night, we are aware of your case, along with 2 other customers. However, as you know from the comments made to you, your BT speedtest results are mainly falling above the assured rate points, therefore making this difficult to raise with BT presently. Where the tests have fallen below, we are still awaiting a TAP 3 test from you, but you know all this via our support tickets.
As as been already explained to you, your line is getting near to full sync, it's the speeds at all times that has been the focus so far. At no point do we accept this is normal, but presently the throughput speeds you are getting should be ok whilst we continue to investigate this with BT. Reading these forums, there are others from other ISPs seeing similar.
As it stands we have had about 30 hours (16 working hours) to investigate your case. Our replies to you have been prompt and as detailed as they can be.