New British homes are smaller than those anywhere else in Europe, household size is rising in London and slums are spreading as immigrants squash into shared houses (and, sometimes, garden sheds).

新的英国住房变得比欧洲其他地方都要小，但随着移民不断挤进合住房屋，伦敦的家庭规模日益庞大，贫民区也不断扩张。

The government arrives at this figure by estimating the minimum annual pre-tax income that’s needed to pay food, shelter, transportation, and clothing costs for a given household size.

政府通过估算给定家庭规模的食品、住所、交通和服装费用所需的最低年度税前收入得出这一数字。