Button wrote:...is what tariffs have been agreed with... Turkey...
Oops - little point, perhaps, in pursuing a trade deal with Turkey, given that they're in/covered by a customs union with the EU.
Meanwhile, on the 'ready on Day 1' front, we have:
https://www.bbc.co.uk/news/uk-politics-53101542. Alas, no mention of Common Transit formalities for hauliers and UKBF and their continental counterparts (and we're not just talking UK/EU trade here) from 1st January onwards. No mention either of the impact on traffic flows in French channelports from that date if EU exports move under the Export Procedure instead of Transit.