Egg was an internet bank headquartered in Derby, that is now a trading name of Yorkshire Building Society. Egg was born out of the banking arm in the United Kingdom of Prudential plc, which was established in 1996, and the Egg brand was launched in October 1998. The first online credit card was launched in September 1999. It was only possible to operate an Egg account over the internet, or via their call centre. Egg specialised in savings and general insurance, together with loans, credit cards and mortgage products. The business was sold in January 2007 to Citigroup.