I have gotten that train sometimes in the past. But it can vary which trains i get depending on when im working. I do also use the line a lot to get to different places when im not working. So i get a wide variety of different time trains from Betchworth. As i live in Betchworth i do use Betchworth station quite a lot (most days) so i quite possibly could have seen you before. When i travel to London i also often go from Betchworth and change at Dorking (or occasionally just use Box Hill & Westhumble) but normally use SWT to London Waterloo as they are much more reliable.