Last week, the UK Government published a white paper which contains the latest UK proposals for the future UK / EU relationship.
Whilst this contains considerable, and welcome, detail it is currently under discussion in the UK Parliament. It is also expected that this will be discussed in the latest round of EU / UK negotiations taking place 16th to 19th July.
Therefore we have no more certainty today about the future UK / EU relationship and Customs procedure than before.
We await further news after this week's round of negotiations.