Congratulations!
Yes, Southeastern have a depot at Dartford.
I received an e-mail today reading:
I am pleased to confirm you that your application for the posiiton of Trainee Driver Pool - Grove Park has successfully passed the screening process.
I would like to take this opportunity to thank you again for your interest in joining Southeastern, and we will contact you as soon as we are able to continue with your application.
Kind Regards
Recruitment Team
Southeastern
Maybe they have selected Dartford based on your location? If you'd prefer Grove Park, I'd recommend you contact the Careers department ASAP. The e-mail address doesn't appear to be a 'no reply' one.