London has the greatest concentration of African Christianity in the world outside of Africa.
From outside, the churches are largely anonymous, they are usually former factories, workshops, offices and warehouses, all transformed into sacred places of worship.
“You can hear sounds reverberating from these very nondescript buildings, Photographer Dewe Mathews who took photographs of a couple of churches for her series, Sunday Service told BBC.
“In less than hour, 200 local people had filled the former ironmongery to engage in an “ecstatic, expressive form of worship.
“On those cold early mornings, as I lugged my equipment to church, I asked myself why I had chosen to do this.
“But I found I was drawn to the intensity of the African Pentecostal church experience. To see people singing so tenderly, dancing wildly, praying quietly, sometimes weeping and convulsing – it was deeply invigorating to witness, and I was moved to tears,” she added.