upload speed problem

[#1]

HI
Can someone have a look at my upload speeds down from usual 18mps to 1 mps.
Problem appeared to start yesterday (sun).  Downloads also down about 3mps.
thanks in advance
j

[#2]

When I reported similar drop here I was advised to disconnect in router menu, wait a while then connect in router menu again.
This was to change the input/output into Plusnet.