DISCUSS THE IMPACT OF COVID-19, AND FINANCIAL CRISIS ON FIRM’S CAPITAL STRUCTURE IN UK. https://openknowledge.worldbank.org/handle/10986/23623 They do include the UK in the study. Perhaps you could also conduct an analysis pre-post Brexit? some links https://www.sciencedirect.com/science/article/pii/S0275531916302689 https://www.sciencedirect.com/science/article/pii/S089083898371005X https://onlinelibrary.wiley.com/doi/abs/10.1111/1468-5957.00370 https://acta.mendelu.cz/pdfs/acu/2013/07/69.