Probably owing to the diminutive size of the typical British dwelling which is not the size of a small hotel so jealously evident on the N. American continent, domestic LANs are rare to nonexistent.

However, as a new signals type and still functioning professionally, I can tell you they are often the bane of my life since the computer people have no comprehension of radio and do not understand the infinite frequency necessity of making a fast edged pulse. We have serious trouble with LAN generated broad-band noise compromising radio circuits even to UHF 450MHZ - 470MHz.

R.
Tiny house dweller.