individual ministerial responsibility - flaws
depends on the prime-minister being prepared to hold their ministers properly accountable, as well as not breaching the ministerial codes themselves
e.g. Boris Johnson attending parties during the Covid-19 lockdown
soon after Johnson released a revision of the ministerial code
reference to 'integrity, objectivity, accountability, transparency, honesty and leadership in the public interest' was removed and replaced with the statement 'it would be disproportionate to expect any breach to, however minor, should automatically led to resignation'