Overhead versus undrground cable.
The houses in our area are in two types; (1) council owned & private owned on estates served by overhead cables and poles. (2) "POSH" estate where to remove unsightliness of poles and cables , the telephone wires were sunk into ground under pavements. Now the (1) houses are upgraded and get good internet and speeds; the (2) area are stuck with what can be transmitted over their very old cables, as no one is prepared to pay for the high cost of digging up roads, pavements, re-cabling and back filling , and making good to surfaces. The era of internet has bypassed the "POSH" houses. Most have gone to satellite services.