I didn't know that UK is a 3rd world country with bad internet connection.
As you see it depends on hosters. Not all of them have a download limit of 5 GB per download as Mega - and even for that there are workarounds to avoid the download limitation (Mega Sync, dynamic IP, etc.)
As I understand NTL's post next update will be the final and last update for LE. With that the game will still be < 5GB, so totally fine to download. However, there are more options to reduce the game's size by switching and converting images.
The majority of people use Windoof and maybe <0,5% of players use Mac and Linux. Either the auto-updater works only for Windoof user or for all of them. However, I do not worry about it, because I think it is just adding new content into the WWW folder. But time will day how the auto-updater will work.