When I was a Cong. Secretary back in the day I used to run the Gift Aid scheme whereby the cong claimed back the income tax contributors had paid on their donations. Every year we received a cheque from The Government. Thank you.
Nowadays I think it has to be done through Bethel, if it still exists. Our only claim to being a charity was being a recognised religion,but that was enough to have the British tax payer subsidise the work.
Nowadays the Society makes much of their relief work after disasters but that is for their own , through the congregations, not for the community...