Nationwide Building Society 26-27 Eldon Street | Current account, Mortgage, Savings and other personal finance in LondonVisit your local Nationwide Building Society at 26-27 Eldon Street in London. 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. https://locations.nationwidebranches.co.uk/london/26-27-eldon-street