First Potteries operate departures from Stoke-on-Trent city centre (Hanley), Stoke-on-Trent Rail Station and Uttoxeter (except Sundays).
There is also a X52 service that runs from Nottingham and Derby.
You can find the full timetables at the First Group and Notts and Derby websites. Bus routes may involve one or more changeovers to complete your journey.