The Royal Society for the Prevention of Cruelty to Animals (RSPCA) is a charity operating in England and Wales that promotes animal welfare. The RSPCA is funded primarily by voluntary donations. Founded in 1824, it is the oldest and largest animal welfare organization in the world and is one of the largest charities in the UK. The organization also does international outreach work across Europe, Africa and Asia.
The emergence of the RSPCA has its roots in the intellectual climate of the late 18th and early 19th centuries in Britain where opposing views were exchanged in print concerning the use of animals. The harsh use and maltreatment of animals in hauling carriages, scientific experiments (including vivisection), and cultural amusements of fox-hunting, bull-baiting and cock fighting were among some of the matters that were debated by social reformers, clergy, and parliamentarians.
There are five regions (North, East, Wales & West, South & South West, South East), each headed by a regional manager (responsible for all staff and RSPCA HQ facilities) assisted by a regional superintendent who has responsibility for the chief inspectors, inspectors, AWOs and ACOs. The regional managers are expected to have a broad understanding of operations throughout their regions.
RSPCA centers, hospitals and branches operate throughout England and Wales. In 2012 RSPCA centers and branches assisted and rehomed 55,459 animals.
RSPCA animal centers deal with a wide range of injured and rescued animals, working alongside its inspectorate, volunteers, and others to ensure that each animal is found a new home. There are currently 17 RSPCA animal centers across the UK and a further 42 centers ran independently by Branches.
According to the Wikipedia