British people to focus on punctuality much. If you have an appointment or invited to dinner. You should go to the deadline should not be the decisive call. And then to dinner at a friend's house. By courtesy, you should have small gifts such as wine, chocolate or flowers hand and leave the homeowner with a party. Typically, guests will need to bring a drink. Such as wine or beer Trustees to work with To share a drink with friends.
Britain is a country with relatively high cultural diversity. The population of many nationalities together, and most British people are tolerant and welcoming to foreigners with a friendly country do you come from. You can join the society they are comfortable with.