The Go-Ahead Group plc is principally engaged in the provision of passenger transport services. The Company has four segments: Deregulated Bus division consists of bus operations outside London; Regulated Bus division consists of bus operations in London under control of Transport for London; Rail operation, Govia, is 65% owned by Go-Ahead and 35% by Keolis S.A. and consists of three rail franchises: Southern, Southeastern and London Midland, and Go-Ahead North America division consists of a 50% investment in the United States school bus operation. On March 2 and 3, 2012, Go-Ahead Holding Limited (Go-Ahead) acquired Hedingham and District Omnibuses Limited, and Carousel Buses Limited respectively. On March 30, 2012, London General Transport Services Limited, a wholly owned subsidiary, acquired Northumberland Park bus depot in Tottenham, North East London. On April 23, 2012, Go-Ahead acquired Anglian Bus Limited. On June 2, 2012, Go-Ahead acquired HC Chambers and Son Limited.