Mutually owned norwich and peterborough building society (n&p) provides financial services and products in the uk, including residential and commercial mortgages, deposit accounts, personal loans, credit cards, insurance, investments, stock trading, and financial advice. the company offers discounted "green" mortgages for energy-efficient homes and plants trees to offset the home's greenhouse gas production. it has more than 50 branches, primarily in the east of england. n&p was created in 1986 through the merger of the norwich (founded in 1852) and peterborough (founded in 1860) building societies. it is merging with yorkshire building society, but will continue as a separate brand once the deal is complete.