Households with only one or two occupants continue to proliferate across the UK. Small car segments accounted for less than 30% of the UK passenger car market until 1999 but now hover around the 40% mark. Is this simply coincidence or is there a right-sizing trend in the market that is glacial in nature – slow but unstoppable? Euromonitor International reviews the right-sizing trend in the UK car market in light of changing demographic, consumer expenditure and consumer lifestyle patterns.