RouterStats Lite can interrogate Sky's SR102 router (Sky Hub 2) and plot the sync speed & prevailing SNRM at defined intervals into handy charts.
Might not be that useful in your situation as you'd need to have a PC up and running the whole time over the month to secure a complete sample set to demonstrate the issue (my problem was exhibiting every workimg week day). Just thought I'd mention it as it assisted investigations into noise impact on my line a while back.
Thanks for the info, i'll certainly give it a try. Thankfully it has stopped disconnecting but next month is just around the corner so will try get this setup asap.
Just hope my laptop can run for a month without a restart