Barclays Contact Number 0800 400100 About Barclays Barclays is a well renowned British multinational bank with its financial services extended worldwide making the company much comprehensive. Barclays with its headquarters in London is a universal bank with its operations in banking in retail, wholesale and investment banking. Barclays also deals as wealth management bank, that lends mortgages and credit cards. It has its operations in over 50 countries and territories and has around 48 million customers worldwide .Barclays is a …