There are quite a few rules in the big brother house,to keep it sweet i will list the main 14...

1. There is no contact with the outside world.
2. Housemates are filmed 24 hours a day and must wear personal microphones at all times.
3. The Diary Room is the only place in the House where Big Brother will acknowledge the housemates.
4. Visits to the Diary Room are compulsory.
5. Nominations are compulsory.
6. Housemates must give frank and honest reasons for nominations.
7. It is not permitted to discuss nominations, or try to influence anyone else's nominations.
8. It is not permitted to discuss details of how they'd spend the prize money (if they were to win)
9. Eviction is decided by public vote.
10. All tasks and challenges are compulsory
11. Housemates must not act violently towards any other housemate.
12. Housemates are free to leave the House at any time.
13. If any housemate breaks the rules they may be asked to leave the House.
14. Big Brother reserves the right to change the rules at any time.