From home, I have noticed a marked downward shift in performance over the last two years. It's clear that come end of the school day and the kids get back home, performance drops off significantly. I can only guess that the combination of contention ratio and availability of massive downloads, such as BBC iPlayer programs and YouTube videos, has contributed to the degradation.
Either way, my home is too far from the exchange to expect relatively high speeds. And there's no cable offering in the area, either.
We're heading for more problems, imho, unless the infrastructure gets significant investment.
BT say I can get 4meg as against my ISP's advertised 8. The connection normally hovers around 2, sometimes down to .7 and very occasionally jumps up to around 3.
Mobile "broadband" is a joke. Connections usually drop after 10 minutes and speeds are often well below 1 meg. Speed isn't dependent on signal strength so I guess my provider (no names, just think of a number) has rather oversold the service. When my daughter moved to a flat without a landline I advised her not to go straight into a mobile contract but to buy her own usb modem then try all the providers out on PAYG first.