The 2019 Conservative Party manifesto contained a number of constitutional policy commitments – on Brexit, UK institutions, elections, civil liberties, and devolution. As the manifestos for this year’s general election emerge, Lisa James assesses the delivery record of the 2019–24 Conservative governments against the pledges made in 2019. 

The 2019 Conservative Party manifesto contained a wide-ranging set of constitutional commitments. Since its publication much has changed – the UK has left the EU, experienced a global pandemic, and had three Prime Ministers and five Chancellors of the Exchequer. But delivery against manifesto commitments still matters, so with the 2019–24 parliament dissolved, now is the time to reassess the pledges that were made. 

Getting Brexit done 

The single highest profile – and titular – pledge of the manifesto was of course the promise to ‘get Brexit done’. The election followed a period of parliamentary deadlock, and the negotiation of Boris Johnson’s Brexit deal. The manifesto pledged to pass this deal, limit the length of the ‘transition period’ for negotiating new trade arrangements, end the jurisdiction of the European Court of Justice (ECJ) over the UK, and end the supremacy of EU law. 

The Brexit deal was rapidly passed following the Conservative general election victory, and the UK left the EU on 31 January 2020. The pledge not to extend the transition period beyond the end of 2020 was also kept. The deal largely removed ECJ jurisdiction from the UK, but the court retained a continuing role in relation to Northern Ireland as a result of its treatment under Johnson’s Brexit deal (discussed further below). The supremacy of retained EU law (a special category of legislation derived from the UK’s EU membership) was ended by the Retained EU Law (Revocation and Reform) Act 2023.