A short history of the British constitution

How have the British ‘improved’ their constitution over the last 100 years. I have a look but conclude with how the Government is riding roughshod over what puny safeguards exist. I look at parliamentary sovereignty, suffrage, the parliament acts, the impact of the EU on the constitution, human rights act, the House of Lords and supreme court, and finally the Prime Minister. I conclude with a sad cry to do better.