TfGM website has who is running the replacement services for Maytree service when searching for timetables on its Bus Times Leaflet page:
Replacement services are:
Arriva
*525/527 (Eve/Sun), 534 (Eve/Sun), 538/539 (Eve/Sun), 570, 714, 715 (Eve/Sun)
First
*31 (M-S daytime), 95 (M-S daytime), 507 (evenings), 510 (M-S evenings), 519 (M-S evenings), 525/527 (M-S daytime), 561/562 (evenings), 571/572 (evenings), 575 (M-S eves)
Rossendalebus
*273 (Sunday daytime)
South Lancs Travel
*516 (M-S eves), 551, 583 (Sun daytime), 584 (M-S eves), 597 (M-F eve/Sun daytime), 612 (weekend evenings), 622 (Sundays)
Stagecoach
*96, 512/513, 516 (Sun daytime), 536 (M-S eves/Sun daytime), 544, 553, 559, 576 (M-S eves), 583 (M-S eves), 584 (Sun daytime), 597 (M-S daytime)
(96, 512/513, 536 and 544 listed as Stagecoach Manchester, all others as Stagecoach in Wigan)
Stotts
*495
Wigan Buses
*612 (Weekday evenings), 622 (M-S evenings)
http://www.tfgm.com/journey_planning/Pag...brary.aspx