We moved away from a poor provider (PostOffice) and we are VERY pleased with the service so far.
We got Home::1 a couple of weeks ago.
They provide constant monitoring, so you can see when you hit your bandwith limit, your usage and detect "rouge" devices (I discovered that Chromecast was constatnly dowloading pictures when on even if not streaming).
The UPLOAD speed is considerably better (my parents keep on telling me how clean and smooth we look on Skype!) and the downloading is reliable (no more buffering when playing iPlayer)
It is a "technical" ISP, which means you get proper answer to your questions, but going trough the website could be a bit intimidating as there are plenty of technical info and little reassuring marketing crap.
It is roughly twice as expensive, but the overall experience is much more than twice as nice.
We have a monthly 100GB cap of dowload trafic. I am more than happy with caps as long as it is very fast when I need it. I understand there is no unlimited bandwith for everybody all the time.
From first estimates, we probably use 20-25 GB/month
Time With Provider:
Package Name: