[_Codemonkeyism]

Major point of the Wikipedia article too me looks like most of the help came from Scotland itself,

"The Free Church of Scotland, strong in the affected areas, was prompt in raising the alarm and in organising relief, being the only body actively doing so in late 1846 and early 1847; relief was given regardless of denomination. In February 1847 the (non-governmental) Central Board of Management for Highland Relief, supported by Relief Committees in Edinburgh and Glasgow, took over from the Free Church ; by the end of 1847 the Relief Committees had raised about £210,000 to support relief work."

Looks like your quote from the abstract of "prompt [...] charitable efforts by the rest of the United Kingdom" is contradicted by the "being the only body actively doing so in late 1846 and early 1847" of the main body of the Wikipedia article.