The British government estimates it will spend at least STG4.7 billion ($A8.9 billion) on implementing post Brexit border arrangements, after repeated delays in setting new rules, parliament's spending watchdog says.
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Britain voted to leave the European Union in 2016 but, such was the scale of the task to untangle supply chains and erect customs borders, that it is only this year setting new rules.
The first phase of Britain's so called new Border Target Operating Model, requiring additional certification, came into force on January 31.
A second phase started on April 30, introducing physical checks at ports. A third phase, requiring safety and security declarations is slated for October 31.
The National Audit Office (NAO) said the STG4.7 billion is the amount the government forecasts it will spend on the 13 most significant programs to manage the passage of goods across the border post Brexit and improve performance over the lifetime of the programs.
The government delayed the implementation of full controls five times since the end of the EU exit transition period on December 31, 2020.
This caused uncertainty for businesses, extra costs for government and ports and increased the biosecurity risk to the UK, the NAO said.
"The repeated delays in introducing import controls, and difficulties forecasting requirements, have resulted in government expenditure on infrastructure and staff that were ultimately not needed," it said.
"Late announcements about policy and uncertainty about the implementation of controls have also reduced the ability of businesses and ports to prepare for changes."
The NAO noted that while post EU exit border processes have operated "relatively smoothly", businesses trading goods between the UK and the EU have faced additional costs and administrative burdens.
The watchdog was also critical of the government's 2025 UK Border Strategy, which was published in 2020, saying it "lacks a clear timetable and an integrated cross-government delivery plan, with individual departments leading different aspects of implementation."
The government also needed "a more realistic approach" to digital transformation, the NAO said.
Australian Associated Press
