Complex sentence: On 5 January 2012, following the merger with Northern Rock, Northern Rock plc began to provide new savings accounts under the Virgin name; These have gradually been supplemented by other additional banking products under its own brand name.
Split into simpler sentences: On 5 January 2012, following the merger with Northern Rock, Northern Rock plc began to provide new savings accounts under the Virgin name. These were gradually supplemented by other additional banking products under its own brand name.