Jamie, I'd suggest that you check the timetable. The 18.10 train was an existing service. It makes a couple of stops before HHatch, whereas 18.05 only made 1 stop. 18.10 does not take the same time as the 18.05 used to. As Grainne Whale mentioned there is no feeder bus for this train. So it now takes approximately 20 mins longer (once I powerwalk from the train station) than before the timetable change.
Think you will find both take 18 minutes....