Jon,
First ND = Neck Dissection which can range from Radical where they take all the nodes on one side and muscles, nerves and blood vessels to Partial where they may only take the confirmed nodes.
Re
HPV, there have been at least 2 recent studies that have confirmed that
HPV+ SCC responds better to existing Tx and therefore has a less chance for recurrence.
Re chemo, I had Cisplatin which is still the most widely used chemo to ASSIST the radiation.
Re radiation, it's the ONLY thing that will kill active SCC cancer cells. They usually recommend adding chemo if there has been nodal involvement and they will usually say that the chemo will add another 20% or so to the kill rate by effectively making the cancer cells more easily killed by the radiation. Usually chemo is never given alone unless they are trying to "clean up" post radiation or you reach a terminal stage.
Re totally cutting out your tongue, I WOULD RUN FAR AWAY FROM THAT HOSPITAL unless your primary BOT is massive.
Why can't you go back to the UK and get free medical care?