How we took Leeds Building Society to 10 Downing Street .

Every day, 233 people miss out on buying their first home. By 2028 these lost buyers could collectively form a city bigger than Coventry, Bristol, and Cardiff. So we created that city, and called it Losthaven.

We put Losthaven on the map where it mattered - the biggest political conferences of the year, where the housing crisis was a hot topic for UK policymakers. And through content, social activity and postcards delivered directly to 10 Downing Street, we helped unwilling residents make their voices heard.