One thing is certain: there is no agreement that upholds the status quo. What is currently being discussed between the EU and the UK is a duty-free trade agreement similar to the one between the EU and Canada. The UK has indicated that it is unwilling to remain part of the EU Customs Union because it controls its borders and its own [...]
The neverending story: Brexit! No-Deal, elimination on April 12.4th, further negotiations. Much still seems possible (as of early April). However, time - especially in the case of a no-deal - is becoming increasingly scarce. With the possible exit of Great Britain from the customs union, many challenges arise for your supply chain!