Scotland

Declaration of Arbroath

https://www.historyfiles.co.uk/FeaturesBritain/Medieval_TextArbroath01.htm

Proposed Scotland Act

https://www2.gov.scot/Resource/0045/00452762.pdf

 

Ireland

Constitution of Ireland

https://en.wikisource.org/wiki/Constitution_of_Ireland_(consolidated_text)#AMENDMENT_OF_THE_CONSTITUTION

 

Wales

Government of Wales Act 2006

http://www.legislation.gov.uk/ukpga/2006/32/contents

Wales Act 2017, devolved taxation

http://www.legislation.gov.uk/ukpga/2017/4/contents/enacted

United Kingdom

Statute of Westminster

http://www.legislation.gov.uk/ukpga/Geo5/22-23/4/contents

Blueprint for a  UK Constitution – University College London

https://www.ucl.ac.uk/constitution-unit/sites/constitution-unit/files/ccblueprint-2.pdf

Australia

Australian reached independence by a complex mixture of the American Way and the Westminster Way, see

https://en.wikipedia.org/wiki/Constitutional_history_of_Australia

 

New Zealand

New Zealand reached independence by the Westminster Way and has an unwritten “Constitution” resembling that of the United Kingdom. The long progress to independence can be seen at

https://en.wikipedia.org/wiki/Constitution_of_New_Zealand