No reliable internet connection since the start of December

[#1]

Have you disconnected from Plusnet then reconnected again? You need to do that to pick up the revised service profile.

[#2]

Nope i hadnt but gave that a try last night after posting and it went to 2,400
Today back up to normal woo hoo
Thanks for all the assistance
All down to a voice fault !
Download speedachieved during the test was - 5701 Kbps
For your connection, the acceptable range of speeds is 600-7150 Kbps.
Additional Information:
Your DSL Connection Rate :7840 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 6500 Kbps

[#3]

Fantastic news, glad we could help. Cheers for letting us know.