Grants for windows

Hi, I live in one of the squares and am having all our sash windows overhauled; they are in a very bad state. Someone mentioned to me that you can get a grant from the city council to help with this. Does anyone know a contact point for this? I am sure others must have done this before me. I am going to phone the council and see what info I can get, but if anyone knows the ropes here and how you do it, I’d be very grateful as it is going to cost me one of my arms and legs!!!

Thanks,
Joan