For those of you with Virgin, good luck, the merger with O2 is not based on becoming a world leader but to try and gain more services to cross sell. TEF have been trying to offload the UK O2 business forever and investment was culled in many areas during that period. I doubt the new business is going to be as well funded as it needs to be to fight the other two monsters that are shaping up.
BT, EE, PlusNet
Vodafone, Three (with the merger announcement last week)
Re the comment on DNS there are lots of alternative services available now.
There is no reason that you have to use the one provided by your ISP.
https://www.techradar.com/news/best-dns-serverI have been using Cloudflare for some time now and it's great.
Cloudflare offer an excellent free consumer service which is also a lot more private, set to 1.1.1.1 and 1.0.0.1
They also offer a curated pron/gambling filtered DNS for those who would benefit 1.1.1.3 etc
