The Act provides enabling powers to impose and regulates a UK customs duty regime on the import and export of goods once the UK had left the European Union, as well as to allow sufficient flexibility to give effect to a range of potential outcomes from negotiations with the UK’s European partners, including an implementation period, and implementation of a new Customs regime in the event there was no negotiated settlement.
As is now known, there was a negotiated settlement between the UK and EU. Furthermore, the Act sought to replace the current EU Union Customs Code and amend incumbent UK VAT and excise duty laws in connection with the withdrawal of the UK from the EU.