ADSL(Asymmetric digital subscriber line)
ADSL is a type of technology that enables data transmission over copper telephone lines. ADSL allows more data to be sent over existing copper lines when compared to traditional modem lines.
ADSL allows for any premises with a telephone line to get an internet connection. Speeds are slower compared to fibre but the widespread availability means that almost every business premises in the UK can get a secure and stable internet connection. It is also much cheaper compared to fibre.