Rise of £5m-plus mortgage: low interest rates lure super-rich

Global elite take out £1.8bn in mortgages for London houses in year to end of September

Twenty tech trends for 2020

From new gaming consoles to activism at Apple, we predict the things you will – or won’t – see in tech this year

A cinema, a pool, a bar: inside the post-apocalyptic underground future

A missile silo converted into a 15-storey luxury subterranean apartment complex could be a taste of what lies in store in cities around the world