55Mbs over WiFi from a Hub with an Ultrafast 1 connection to the internet is entirely plausible. All WiFi is zero Mbs after some tens of metres or on the other side of a few walls.
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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
