What if the English Civil War had gone differently?

Parliament and king go to war; the king loses his head and, briefly, England is a republic.

If it had gone differently: The English crown is never forced to reckon with Parliament by arms; the settlement of 1688 has nothing to build on.

1. 1688The Glorious Revolution, The English crown keeps its arbitrary power over taxes and courts; property and lending stay risky.
2. 1720The Enlightenment, Absolutism keeps its intellectual cover; 'rights of man' never enters common speech.