135 Fenchurch Street London EC3M 5DJBrand: Nationwide Nationwide Building Society | Building society, nationwideThe world's largest building society, run for the benefit of its members. Helping you with current account, mortgage, savings and other personal finance needs.As part of a regulatory requirement, an independent survey was conducted to ask customers of the 16 largest personal current account providers for Great Britain and 11 largest personal current account providers for Northern Ireland if they would recommend https://www.nationwide.co.uk/