Regulation of All-Party Parliamentary Groups (APPGs)
All-Party Parliamentary Groups are regulated by the House of Commons. Rules and guidance are kept under review by the Committee on Standards.

This note lists SNP leaders and officials since 1975.
Scottish National Party leaders and officials since 1975 (96 KB , PDF)
Commons Library Briefing paper Party Membership of UK political parties provides details of membership figures for all UK parties including the SNP
The current composition of the House of Commons and links to the websites of all the parties represented in the Commons can be found on the Parliament website: current state of the parties.
This series of publications contains data on various subjects relating to Parliament and Government. Topics include legislation, MPs, select committees, debates, divisions and Parliamentary procedure.
Any comments or corrections to the lists would be gratefully received and should be sent to the Parliament and Constitution Centre. Suggestions for new lists welcolmed.
Scottish National Party leaders and officials since 1975 (96 KB , PDF)
All-Party Parliamentary Groups are regulated by the House of Commons. Rules and guidance are kept under review by the Committee on Standards.
A briefing paper on the preparations for the Coronation of King Charles III and Queen Camilla, what took place on Coronation day and other events associated with the ceremony.
A briefing paper which "maps" (or summarises) the main elements of the United Kingdom's uncodified constitution.