Respectfully, I strongly disagree with almost everything you've said here.
Firstly, I resent this idea that 'modern Britain' agrees with me - as if many British people in the 21st Century don't hold troubling and awful views/behaviours about women? This is a very western-centric, orientalist view. The premise of this is inherently flawed in nature.
Secondly, if people believe in religion, that's their prerogative. You say people become indoctrinated and more close-minded; but people who are religious (and especially those who are converts), a lot of feedback from them will tell you that they felt liberated, more open-minded and that it's help them to understand various perspectives. Religion is a set of principles and beliefs that relate to a higher purpose/reason for being. I can just as easily say that by telling your kids that God doesn't exist, that religion is nonsense etc that you're indoctrinating them with negative preconceived notions and ideas about people who choose to believe in something different. Plurality still does exist in religion, contrary to what you believe.
Thirdly, I don't agree with the idea that religion is largely responsible for holding back women. The rights of a woman under Islamic law from the beginning was more progressive than a lot of the stuff we saw in Europe for centuries. For too long, people in power hide between the veil of religion to suit their insidious agendas and will try to cherry-pick certain quotes that justify their bigotry. These current Muslim-dominated countries, where women don't have many freedoms, is not something that is universally supported or accepted by other Muslims. Again, a lot of is to do with power hierarchy, control, colonialism and imperialism.