I am a Plusnet customer and upgraded from ADSL to Fibre today
Mine was a managed install but i believe Plusnet have just ceased this, for a while new customers were self install and upgrades were managed but I think they are all self install now.
Had a slight issue with the engineer (contractor by the way) in that he advised me OR no longer supply the Home wiring solution and Plusnet should have sent me one, Didnt totally buy this and 'nothing I can do' soon changed to 'lets see what we can do'
Master socket moved to another room and current house extension reconnected to it. The guy also made a data extension of sorts with a length of CW1308 hardwired into the internal data connection of the master and connected an RJ11 on the other end! seems to be working ok