Unity, the essence of Sacralism
Sadly, Britain has not abandoned the Sacral model, instead largely substituting a Secular Sacralism...oh yes, it's quite possible. Secular Sacralism is nothing more than the seeking of a secular unity, a secular utopia. Sacralism casts society in theological terms. With secularism it's a closed universe rejecting the idea of revelation, so it's not theology in a proper sense. But even secularism must account for metaphysical issues like ethics.
It has a creation narrative, an eschatology (the goal) and a soteriology (how to get there)... secularism is perfectly able to shape its own ideas in this regard. The key is all Sacralisms are committed to forging a social unity. There can be diversity within the Unity, but everyone MUST embrace certain values and goals.