Nationwide Building Society which is mutual financial institution in Britain is known to be the largest building society in the world.
The company is headquartered in Swindon, with its office in Thread needle Street, London. Its administration centres are situated in Bournemouth, Northampton and Dunfermline. The company is made up of around hundred mergers, and most notably the merger with Anglia Building Society (1987) and Portman Building Society in (2007). Nationwide is now ranked as one of the top-three providers of mortgages and household savings in the United Kingdom. Nationwide is one of the members of the Building Societies Association, Co-operatives UK and the Council of Mortgage Lenders. Founded in 1846, the bank employees around 15,000 people.