Fibre Broadband is a high speed broadband service connecting you to the Internet. The much higher upload and download speeds of a Fibre Internet Connection affords the use of HD online streaming of TV and Movies allowing you to watch what you want, when you want. If you have a family all fighting for a broadband connection and you're encountering buffering the Fibre would most certainly alleviate this.
According to Wikipedia Fibre is a broadband service with an underlying network is fibre-to-the-cabinet (FTTC), which uses optical fibre for all except the final few hundred metres to the consumer, and delivers claimed download speeds of "up to 76 Mbit/s" and upload speeds of "up to 19 Mbit/s" depending on package selected. The fibre terminates in a new roadside cabinet containing a DSLAM, from where the final connection to the customer uses VDSL2 technology.
Another advantage of Fibre Broadband is that most Software manufacturers such as Microsoft and Apple have now moved away from physical methods of distribution such as CD's and DVD's and have adopted downloads instead. As a VERY rough example Apple's new OS macOS Sierra would take over 2 hours to download over standard broadband, the same download over fibre would take around 15 minutes!
Ok I'm interested in Fibre Broadband but who should I buy from?
I usually recommend BT Infinity to my customers but in the interest of fairness to other providers here's a link to broadbandchoices.co.uk