The Government of Scotland Bill provided for the abolition of the business premises vote. A Conservative amendment to keep it was defeated by a large majority with all except a few Liberal MPs voting with Labour. Only in the cities of Edinburgh and Glasgow was this vote of any significance.
An amendment by a Labour MP to abolish the representation of the Universities of Aberdeen, Edinburgh, Glasgow and St. Andrews in the Scottish Parliament was defeated by 17 votes. But a majority of Labour backbenchers voted for the amendment.
An amendment to substitute the single transferable vote for the alternative vote, except in six constituencies in the highlands and islands, for elections to the Scottish Parliament was passed by a substantial majority, with Conservatives, Liberals and some Labour voting in favour.
When the House of Commons rose for the summer recess on 7 August 1924, the Government of Scotland Bill and the Representation of the People Act (1918) Amendment Bill had passed through all their stages in that House.
The events in this TL in connection with the Campbell case are as in OTL up to the cabinet meeting on 6 October 1924. (1) At that meeting the cabinet decided, with Ramsay Macdonald the only dissenter, to agree to the Liberal amendment to the Conservative motion of censure on the government for its handling of the case. The Liberal amendment called for the establishment of a Select Committe of the House of Commons to inquire into the matter. In OTL the cabinet decided to treat the Conservative motion and the Liberal amendment as motions of censure, and that if either were carried, Macdonald would dissolve Parliament and call a general election.
The Conservative motion was debated on 8 October. During the debate the Prime Minister, Arthur Henderson, announced that the government accepted the Liberal amendment. He said that Ian Macpherson, the Liberal MP for Ross and Cromarty who was Chief Secretary for Ireland from 1919-1920 and Minister of Pensions from 1920-1922, and a barrister, had agreed to be Chairman of the Select Committee.
At the end of the debate Baldwin anounced that the Conservatives would withdraw their motion. As the Liberals had withdrawn their amendment there was no vote at the end of the debate.
This is a major POD. There is no general election in 1924 with a Conservative landslide, and the Labour government continues in office.
(1) Here is an excellent article on the Campbell case in the Journal of Contemporary History, April 1974:
http://www.jstor.org/stable/260051 .