@Roger48
15Mbs is still incredibly slow, and suggests a long copper line which is inevitably susceptible to further speed decrease through external factors.
If you post your Hub stats, we'll have some information about your particular phone line and internet connection to work with.
Note that it's speed arriving at the Hub which counts against the minimum speed guarantee, not speed test website results on a wireless device.
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Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
