Go out for a pint up in Camden Town, go grocery shopping at Safeway together or watch some English television. The more you get to know your flatmates the more you are aware of their habits and their pet peeves and they are more aware of yours. Give people space. If there is a problem within the flat deal with it straight away. The more you let it fester, the angrier you will become and it may result in a confrontation that you meant to avoid.
Communication is key.
You will want to avoid attacking the person because then they become defensive. If required, use a neutral third party as a mediator. Thankfully at Studios92 a cleaner comes into clean the common areas at least once a week which avoids heavy cleaning duties by the flat. With your roommate, s et up guidelines for sharing. Some roommates do not mind, others do.