If you're a small charity or community interest company addressing social inequality on a local/regional basis, then you might be eligible for the Charity Aid Foundation's Keystone Fund. Applications opened last Thursday and are only open until 23 November, so the window is tight, but you might able to able to get your hands on up to £50k.
Full details can be found here.
The Keystone Fund aims to enable locally and regionally-focused charities working towards social equity to become more agile in their support for their communities. It provides a programme of unrestricted grants, networking and access to advice webinars and toolkits.