Half of our trade is with the EU. They're not on that list.
Haha fuck me, the EU aren't on a list of non-EU countries and trading blocs we've signed agreements with.

Quote Originally Posted by that .gov.uk link
The UK is seeking to reproduce the effects of existing EU agreements for when they no longer apply to the UK.
This doesn't imply WTO. You don't "sign" an agreement to trade under WTO rules, that's what happens if you don't sign an agreement.

The USA are a little lower on this page, with Australia and NZ under MRA's. These deals "replicate the effect of existing EU arrangements."

And you mention oranges. They currently mostly come from Spain. Assuming we don't agree a deal with the EU, we'll likely buy our oranges from elsewhere, perhaps South America. Who does that hurt? The UK? Or Spain?