The UK signed a series of trade continuity agreements to ensure minimum trade disruption after Brexit day. However, it has only secured nine out of 40 trade agreements that the EU has with more than 70 countries and thus will obviously not be able to transfer all the trade deals in time. Covered by these agreements are countries including Switzerland, Norway, Israel, Chile and others. These agreements mostly follow the EU model, even though some might include modifications. The UK’s trade department has allegedly faced difficulties in replicate the EU’s treaty with Japan, as Tokyo is pushing for a better deal.
UK Trade department guidance
BBC article
Financial Times article