In the UK it looks like Christians, Muslims and other religious people are facing a shared threat to their way of life from the liberal establishment (for example government enforced LGBT indoctrination of children and the threat of exclusion from the professions and public life for those with sincerely held religious convictions in this area). Given demographics in the UK I am interested whether people on this forum think there is any scope to organise a coalition across religious divides and to speak with one voice in the defence of religious freedom and traditional family values. I believe both the Christian and Muslim communities in the UK are too small to make an impact on their own but together and with other social conservatives they could be a large enough voting block to put pressure on the government take a less aggressive stance on this issue.
I'm not sure that I accept your premise; there is no 'LGBT indoctrination of children', if you mean that children are taught about the sort of families that a modern 21st century country contains, then yes they are taught about same sex relationships. It is highly possible that some parents at their school are in such a relationship - they need to be taught that it is acceptable and normal.
What you propose is not religious freedom, it is religious privilege. Special rules for people who have faith. This is 2020, we rely on science and reason, not faith, superstition and ancient scripts.
I know people in same same sex relationships who have children, very happy children in a loving family environment; I much prefer their family values than the type you are suggesting, one that is full of hate.
What is aggressive about teaching about loving relationships in a school classroom? It is the protesters outside these schools who are the aggressors, intimidating young children and their caring staff and parents.