It seems to be common for people to conflate, to assume the sameness of, a revival of national power and prestige with a revival of Christianity. This conflation seems to happen both on the mainstream political 'Right' as well as the Left (who bracket nationalism and Christianity under the category of 'fascism' which they bestow indiscriminately upon all their opponents).
But although de-nationalisation and anti-Christianity are being simultaneously pursued by the Leftist Establishment; the two do not necessarily go together, indeed I think they cannot (in principle) be pursued in parallel - we must choose one or the other as priority.
If it is accepted (which I argue elsewhere at length) that the Global Establishment is purposively evil, being tools of the demonic powers dedicated to the damnation of Man - then we can see that the anti-Christian agenda is primary; and the globalist agenda is a means to that end.
The Right-wing nationalist agenda sees engineered mass immigration and population replacement as a toll for destroying Western Civilisation; and the main modern problem. But from a Christian perspective this is a secondary problem, and not the main goal of those who pursue demographic destruction.
For Christians, the role of demographic destruction is to induce fear, hatred and chaos - justifying the extension and completeness of the materialist, surveillance and micro-managed totalitarian state which is already substantially in-place.
This planned totalitarian society will be used to (attempt to) destroy Christianity, and indeed all transcendental thought - by deluging the mind with constant input, by rendering the will passive, by filling thought with bad stuff, and by manipulating emotions: by burying our true free selves under layers of engineered and automatic habits and responses.
But the planned totalitarian future can only be resisted by a society that has higher goals than the modern 'utilitarian' public ethic of maximising pleasure and minimising suffering during mortal life. If our feelings and pleasures are to be the bottom line, the totalitarianism will not be resisted, because totalitarianism can sell itself as the best and only means to human 'happiness' (as with Aldous Huxley's Brave New World).
So a Christian revival is the priority; and this would be welcome from whatever source - however, to be effective against the prevalent materialism of modernity, any Christian revival needs to be spiritual.
Spiritual sounds vague - but what is needed is anything-but vague. It is indeed radical beyond anything we have yet experienced (except among a tiny minority). Recent and current Christianity (and I mean among good and sincere Christians) is very materialist - very assimilated to modernity; it is a set of beliefs, a set of assented 'fact'; rather than that different way of thinking, perceiving, and experiencing which is required.
To get back to priorities - the observable fact is that over the past twenty years the British population, hence culture, has been replaced by a variety of other people and cultures - typically non-Western. This has been enabled and facilitated by native sub-fertility; which is itself the major symptom of nihilism and despair - i.e. the British people in a deep sense, en masse, want to become extinct.
That national despair (consequent upon wholesale and near-complete abandonment of Christianity - including among self-identified mainstream Christians and especially their leaders), ultimately, is also why the British have passively-consented-to being substantially replaced; with very little discussion, indeed very little awareness of what is visibly and rapidly happening.
This analysis reveals that nihilistic despair, hope-less-ness, demotivation is the core problem for Britain (and The West generally). Also, awareness of the evil agenda of demographically-induced chaos leading to fear and hatred makes clear that the evil agenda will not be prevented, but will instead be assisted and advanced, by any nationalism based upon fear and hatred.
In a nutshell; there is only one positive option for Britain and that is a Christian awakening distinguished by a new and qualitatively-different perspective on reality; a new and spiritual way of perceiving and thinking.
Furthermore; such a Christian awakening needs to encompass regent migrants to Britain - if hate, fear and chaos are to be avoided.
In other words, National cohesion must be based on religion first, transcending cultural and racial differences. Indeed, religion (and only some religions) are the only known effective basis of long term, non-tyrannical social cohesion among people of different cultures and natures.
To put it another way; the future is totalitarian tyranny or a society based on one, shared religion; and that can only be Christianity; and an effective Christianity needs to be spiritual (non-materialist).
Unless there is Christianity and that Christianity embodies a different and spiritual (non materialist) way of being - then we will remain trapped in nihilism and despair.
(Note: The reason to be Christian, and to aim for a new and spiritual Christian way of being, is that this is true, and best, and indeed divinely destined. Above I am arguing for its expediency - which is true - but secondary.)