The challenge that delegated legislation poses to parliamentary sovereignty and associated supremacy in the UK is purportedly addressed through what we term the ‘constitutional bargain of delegated law-making’. This has three elements: the proper limitation of delegation by Parliament through well-designed parent legislation; the exercise of self-restraint by the Executive in the use of delegated authority; and the enablement of meaningful scrutiny by Parliament. As a paradigm situation in which delegated law-making might be said to be necessary, the first year of the Covid-19 pandemic is an apposite context in which to assess the robustness of that bargain. Our analysis uses a sample of Westminster-generated pandemic-related secondary instruments as a peephole into the broader dynamics of this constitutional bargain and further reveals its significant frailties; frailties that are exposed, but not created, by the pandemic.
