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Title - Should judicial oversight of the UK executive be increased?
Brexit has proven that the UK Parliament can't adequately safeguard against the abuse of executive power. Most recent example is Miller II  UKSC 41. A unanimous UKSC ruled that Boris Johnson's prorogation of Parliament in 2019 was unlawful and void. Furthermore, this case proves that though the UK has acceded to the ECHR, the ECHR can't always safeguard executive power abuses as in this case that didn't involve human rights.
Thus don't we need more JUDICIAL, not just parliamentary, oversight of the UK executive?
Three down-sides are
judicial activism/tyranny, legislating from the bench,
politicization of the judiciary,
and the possibility of corrupt judges.
But with parliamentary sovereignty, the UK Parliament can always just overturn any unreasonable judgments.
UK has left the EU, so no need discuss the EU's Charter of Fundamental Rights or the CJEU.