Whereas every other Western democracy has codified its system of government, Britain’s constitution is a mish-mash of laws and conventions, customs and courtesies. Britain sees no need for the legalistic writing down its constitution in one place. Instead it relies on the notion that its politicians know where the unwritten lines of the constitution lie, and do not cross them.

It is clear that the UK prime minister is certainly not a president in all but name. Whilst prime ministers, such as Blair and Thatcher, undeniably seemed to replicate a presidential style in seeming separate from government, as evident by the infrequent parliament visits and sofa politics under Blair.

A brilliant documentary with case studies of previous cabinets stretching back to the 70, 80s and 90s. Important for examples pre-97 in the Executive topic.