Diamond Bus Ltd., trading as Diamond North West, is a bus operator providing services in the districts of Bolton and Wigan in Greater Manchester operating an extensive commercial network as well as franchised Bee Network bus services on contract to Transport for Greater Manchester. It also serves some areas of the districts of Salford and Trafford.

The Metropolitan Borough of Wigan is a metropolitan borough of Greater Manchester, England. It is named after its largest town, Wigan but covers a far larger area which includes the towns of Atherton, Ashton-in-Makerfield, Golborne, Hindley, Ince-in-Makerfield, Leigh and Tyldesley. The borough also covers the villages and suburbs of Abram, Aspull, Astley, Bryn, Hindley Green, Lowton, Mosley Common, Orrell, Pemberton, Shevington, Standish, Winstanley and Worsley Mesnes. The borough is also the second-most populous district in Greater Manchester.