Before moving on, we'd like to find out more about the kind of person you are. This data will not be used for anything other than studying generally how people use the system, and individual's information will only be used to make statistics (e.g. 50% men liked constraint x).
† We'd especially like your postcode. This can't be used to identify you as a person but will tell us about the kind of place you live (city, village etc.). You share your full postcode with maybe 20 other people. If you are concerned about privacy, knock off a digit from the end - this will make a code you share with about 200 people. Please don't just make one up - your choices will not be recorded!