Update Sat:
After trying the old router (replaced due to it being faulty) and it flashing for 20 odd hours, I walked past it to see it is now solid white, chancing my luck I disconnect from my mobile and give it a go, it works! This was OK for Sat night.
Sunday morning still OK but a lot slower.
As it looks like everything is OK I now try the latest router...nothing! As much as the white light now appears rather than flashing orange, there is no way to connect, very much like the problem I had with the old router.
I have an engineer coming out tomorrow and I'm concerned that they will not find a problem! However the issue is real and intermittent and a major cause of stress! Others mention throttling as the cause of slow speeds, there certainly is a problem that a telephone "engineer" cannot find however I do feel it's more than a coincidence that when I raise an issue, it eventually sorts out, to a standard.
The other issue that surely must play some part is the copper network I'm still on. When doing a full fiber check numbers 1-15 in my street can get it, however 16-27 show as not a chance, were not even thinking of you yet! The same exchange feeds all properties and is roughly in the middle of the street within eye line.
