The HG612 was provided by Openreach, not the ISP. They stopped doing that several years ago.
You now get a VDSL2 router from your chosen ISP. Depending on what it is, it may or may not work with your next ISP, which will usually provide one to replace it.
With BT and Sky they are free, and AIUI the BT one is returnable. I don't know about the Sky one.
My broadband basic info/help site - www.robertos.me.uk.
Domains, sites and mail hosting - Tsohost
Connections: OnePlus 8 Pro max 165Mbps down, 24Mbps up on Three, and B311 4G, tbb tests normally 35-45Mpbs down, 65Mbps off-peak, 9-24 up.
Experience shows us that love does not consist in gazing at each other but in looking together in the same direction. Antoine de Saint-Exupéry.
Edited by RobertoS (Tue 12-Jan-21 10:37:10)