Really easy trophy again, all you have to do is go to the white house in Little Tipworth (last village) where the train station is. Howard's house is on the corner next to the railway crossing and the train set is up stairs in one of the bedrooms, press the
button when stood next to it and it will set the train in motion and all you have do is wait for the maximum of 5 minutes and the trophy will pop.
Here's a video in case you can't find the house.
Credit for the video goes to PS4Trophies from Youtube.