International Trade law and english law, Fob contracts/term

Hello, I will be very grateful if you provide me with some information in regard to trade terms specially the FOB contract relating to incotemrs and english law:

1-what kind of norms governs the trade contracts under english law, is it the sale of goods act 1979 and common law(case law)? or is there any other statutes that regulates the trade contracts in UK?

2- In regard to international trade law is it the Vienna Convention (is it the same as international sale of goods act ?) that governs the international trade law, or is there any other convention governing the international trade?
(my whole questions are related to strict fob contract under both english law and international law). I am very confused and really in need of understanding the topic. hopefully someone can be kind enough to clarify the topic for me.

Thank you