With the release of the One X on the horizon there are some good deals kicking around for the One S, so I took advantage at Game.
My old console had been factory reset about 20-30 times in the last couple of months, (including 5 times in one infuriating day last week), so maybe could've limped on for another couple of months before giving up the ghost.
Got £105 trade-in for my knackered console (which operated flawlessly when they tested it). Picked up the newer console for £200 including Forza Horizon 3 (digital) and FIFA 18 Ronaldo edition (physical). I've no interest in FIFA, and that version is selling new for about £75 so hopefully I'll get £40-£50 for it unopened.
So that'll mean around £45-£55 outlay and I've upgraded the dodgy console to a newer stable one, replaced the old controller with a new one, and picked up Forza Horizon 3. That'll do me nicely.