Nationwide Building Society is located in United Kingdom on St Johns Centre. Nationwide Building Society is rated 3.6 out of 5 in the category building society in United Kingdom. The world's largest building society, run for the benefit of its members. Helping you with your current account, mortgage, savings and other personal finance ...,Nationwide is the world's largest building society with around 15 million members. It's one of the largest savings providers, a top-three provider of mortgages in the UK & a major provider of current accounts, credit cards, ISAs & personal loans.,The world's largest building society, run for the benefit of its members. Helping you with your current account, mortgage, savings and other personal finance needs.