Thanks Webby, actually you already did the check earlier in the thread 😄 and it is a Huawei.
Yeah, I actually think the speed is fine to be honest. I was more interested in why it was dropping. If anything, speeds should be increasing in this day and age, not decreasing.
The main reason I wanted to be sure is because if the speed was due to line errors I would of sorted it out and waited for it to go back up to 80meg. As it seems it's crosstalk, I think I'm going to try and drop my package to Infinity 1 to save money and just have 40meg.