I understand how you feel- I think it’s a pretty normal reaction. A lot of people saying “well in our house it would…” are possibly not understanding or skipping over the feelings of trauma (especially for facial injuries which I imagine are even more personal). In that sense, I understand completely that the money represents an acknowledgement of the pain you suffered, which would be wrong to diminish.
At the same time, £150-£200k is a really significant sum (unless your family income is in the 500k+ range in which case it matters far less). I think you need to think carefully about what, exactly, you want to do with this money, because while it was obviously you who suffered the primary trauma and worked for this, that never happened in isolation. I imagine if you told your DH “I am going to spend <x, y, z> just for me, and then the rest we can do whatever with” he would probably be happy with. It is however both a) selfish and b) foolish just to have the money sitting around until you decide what to do with it.
selfish because even if you were the one who drove this, it didn’t happen alone (as you acknowledge the costs involved in pursuing this came from join finance)
foolish because while you wait to decide what to do with it, inflation will be destroying the value of the money. Even if you invest it for your retirement it would be sensible, maybe carve some out for some family recognition (a nice summer holiday this year or w/e) and invest the rest, or clear debts.
I think you shouldn’t reduce these feelings to selfishness- if I was having my best guess I think this is a trauma reaction. You should do something to address that.