tt1 and sollp - I'm afraid it's bad news from me as well. Speed is intermittent once again and the cutouts are still occuring. To top it off, the modem itself failed to boot about 20 mins ago and has only just started working again. Unfortunately, I have a busy evening planned and can't keep phoning TS, but I will do so later if I can.
One thing I will say is please don't give the engineer any grief, I've actually found them to be stellar guys. They agreed with me all the way that the problem is within the network, but nobody wants to listen to them either. I'm sure when yours visits tomorrow, he/she won't make any attempt to fob you off. I can only hope that enough people contact TS and whoever is in charge starts taking things seriously because this really is getting beyond a joke.
I will update later if I have any news, if not then good luck tomorrow tt1.