I changed my internal wiring and the BT engineer changed the junction box connecting my 2 lines to one line going to 2 sockets from an ancient old nasty one to a new white one using some gel crimps I have never seen before. The speed did seem to stabilise but quite low about 16/4. Another engineer visited and disconnected the internal wiring and found the same errors on the external side. Apparently it was fixed but my IP profile has not been reset it is:
> Download speedachieved during the test was - 17514 Kbps
For your connection, the acceptable range of speedsis 16000-19359 Kbps .
Additional Information:
IP Profile for your line is -19359 Kbps

I am phoning BT now to as if they can reset it or something.