
https://ecipe.org/wp-content/uploads/2022/10/ECI_22_PolicyBrief_Globalisation_08_2022_LY04.pdf

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/899991/200713_BPDG_-_Border_Operating_Model_FINAL_1320_edit.pdf

http://www.cer.org.uk/sites/default/files/insight_js_st_9.6.17.pdf