Lord Sewel | The Constitution Unit Blog

With the Scottish government gearing up for a second independence referendum, questions have been raised about whether or not the Scottish Parliament can legislate for such a poll in a way that the courts will find lawful. In this post, David Torrance discusses the wording of the relevant legislation and the impact of subsequent caselaw, concluding that the prevailing legal understanding is that even a consultative referendum would be outside the scope of the parliament’s powers.

During the House of Lords’ consideration of what would become the Scotland Act 1998, Lord (Donald) Mackay of Drumadoon (a former Lord Advocate and subsequently a Scottish judge) told peers it would be ‘perfectly possible to construct a respectable legal argument’ that it was within the legislative competence of the soon-to-be-created Scottish Parliament to pass a bill authorising an independence referendum.

Lord Mackay added that he remained ‘convinced that the law on this matter should be clarified. If it is not then the festering issue as to whether the Scottish parliament is competent to hold such a referendum will rumble on.’ That was arguably a dictionary definition of prescience.

The debate, if not ‘festering’ does indeed ‘rumble on’ nearly a quarter of a century later, yet much of the commentary seems curiously circular, turning over arguments which might have been relevant in 1998 or 2012 but are less so in 2022. Chief among these is the idea that an ‘advisory’ or ‘consultative’ referendum might pass muster if the dispute were to reach the Supreme Court.

But first let us return to the Lords in 1998. Speaking for the government, Lords Sewel and Hardie (respectively a Scottish Office minister and the then Lord Advocate) were clear that an independence referendum bill would ‘relate to’ the reserved matter of the Union between Scotland and England and would therefore be ultra vires and outside the competence of the Scottish Parliament. As Lord (David) Hope of Craighead later observed, ‘the Scotland Act provides its own dictionary’.

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The Government of Ireland Act 1920 is 100 years old tomorrow. David Torrance examines the legislation and its impact, arguing that a number of the constitutional conventions that regulate relations between Westminster and Holyrood have roots in those that applied to Stormont between 1920 and 1972.

Wednesday 23 December marks the centenary of royal assent for the Government of Ireland Act 1920 (the ‘1920 Act’). That this created the part of the UK known as ‘Northern Ireland’ and its border is well known, but its devolution settlement – a parliament, government, governor and prime minister – has largely faded from public consciousness.

As the historian Graham Walker has observed, Northern Ireland ‘serves as a reminder that devolution and constitutional change has a long, complex, and fascinating history, and did not just appear magically at the end of the twentieth century’ [1]. Indeed, this blog will argue that many of the constitutional conventions now associated with Holyrood-Westminster relations have antecedents in those which developed between Stormont and the UK parliament between 1921 and 1972. There was also one major difference, self-determination, analysis of which concludes this piece.

A ‘sound custom’ of non-interference

Speaking during Lords consideration of the Scotland Bill in 1998, Lord Sewel observed that ‘as happened in Northern Ireland earlier in the century’ the government would expect ‘a convention to be established that Westminster would not normally legislate with regard to devolved matters in Scotland without the consent of the Scottish parliament’. This would later come to be known as the Sewel convention.

The Northern Ireland precedent acknowledged by Lord Sewel was established in 1922 when Home Secretary Edward Shortt (who had responsibility for GB-NI relations at the time, as there was no Northern Ireland Office) advised withholding royal assent for a bill abolishing the Single Transferable Vote method for local government elections (a matter ‘transferred’ to Belfast). When Northern Ireland’s Prime Minister Sir James Craig and his Cabinet threatened to resign, assent was granted.

By 1953, a Treasury document could state that:

In practice the United Kingdom Parliament refrains from legislating on matters with which the Northern Ireland Parliament can deal, except at the request and with the consent of Northern Ireland. It is recognised that any departure from this practice would be open to objection as impairing the responsibility which has been placed on the Northern Ireland Parliament and Government.
HM Treasury, Northern Ireland, the Channel Islands and the Isle of Man: A Treasury Paper, December 1953, page 9

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