This is my first time taking a train, or any from of public transport (i'm from the us), and I had a question regarding my trip. My ticket is from London (King's Cross) to Grimsby Town. It connects in Doncastor and requires that I take a bus from there to Grimsby, will i need to purchase a new ticket for the second leg of my journey? and how will I know which bus to get on, like should it be printed on my ticket once i pick it up? Like I said new to the train and bus thing, so help would be greatly appreciated.