Liam Fox is doing no such thing and you know or perhaps you don't. Trade deal details take months/years to be concluded unless, of course, it's good old Botswana. What Liam Fox is doing is the groundwork for negotiations to start.
If you truly believe that, take a look at the Japan-EU trade agreement and the amount of detail covered
http://trade.ec.europa.eu/doclib/press/index.cfm?id=1684 and then understand why these things take so long to thrash out. Every commodity traded has to be considered - look and learn
As most of the UK's trade agreements have been drawn up by the EU on behalf of the member states, the UK will have to draw up about 80 such agreements around the globe. Carry on believing that Fox has been signing trade deals if you like; it suits your cloud cuckoo land life.