https://news.sky.com/story/virgin-media-o2-to-axe-thousands-of-jobs-in-sweeping-shake-up-13606062
Has some interesting news about CityFibre too and the market generally. Can't think it'll do much for VM's customer service. (Even though that side isn't directly affected.)
My only connection with them is that I'm with Sky Mobile, and they use the O2 network.