This is a great little station for reliable, quick trains into London from Bucks and the Oxford area. Lots of parking, regular buses into Aylesbury and also from Oxford(though I haven’t used these). There’s a small waiting room with ticket office and coffee bar with friendly staff and excellent bacon butties! There is a toilet accessible from outside the waiting room. Quite a hike over the line and onto the London-bound platform, and a cold wind blows in over the fields — but there is a shelter. The advantage is that Chiltern Trains are one of the most reliable train operators, and — outside of peak rush hour — comfortable to travel on. They go into London Marylebone. You can also travel quickly to Birmingham from this station. It isn’t that cheap — around £18 for a single into London out of rush hour — but the reliability makes it worth while if you’re travelling on business.