It ended!
Right first off the BT nitemare ended after 4 months of hell, 6 engineers and over 50 hours of fone calls!! Turned out all that was causing the problem was a defective master socket fitted by the BT engineers that installed the fone line on day one!!!! Now I’m happy with a 4M connection…well i say happy 😉 seems BT have started capping us now from 6PM til midnight..no mention of it in their usage policy or in the terms and conditions on signup..supposed to be unlimited but it seems that we all seem to go from whatever the connection is, for example mine is 4M, to about 500k until midnight. Now during these magical hours the BT speedtest site wont work! What a supprise there!!