The Liberals stay united

I've seen a few WIs based on the premise that the Liberals under Lloyd George and Asquith stay united instead of disintegrating in the early 1920s, but I don't think I've seen any on this premise.

What if Gladstone doesn't push the Liberal Party towards open support of Irish Home Rule, and consequently Joseph Chamberlain and the Liberal Unionists stay part of the Liberal Party? What effects does this have on British politics, and on Ireland?
 
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