hey thats interesting! did they just progress your application the next stage this week?
as for questions, i've only done the hirevue video interview for the graduate scheme and i was asked 5 questions. from what i can recall, they were along the lines of:
1. Tell me about a time where you had to resolve a team disagreement problem.
2. How did you find out about our company and what does BAE systems do?
3. Tell me about a time where you had to lead a team.
4. How do you keep up to date with current news.
5. What do you enjoy to do in your spare time?
Disclaimer: These are not in the exact order as in the interview and the statements/question aren't word for word.