https://www.ifs.org.uk/uploads/publications/bns/BN243.pdf
https://www.bruegel.org/system/files/2024-07/PB%2010%202024.pdf
https://www.imf.org/-/media/Files/Publications/PP/2023/English/PPEA2023001.ashx
https://www.hesa.ac.uk/data-and-analysis/publications/finances-2015-16/introduction