Highworth Research is the UK-based publisher of Highworth's Single Family Offices, the largest online database of single family offices located outside the USA. The firm started researching and building the database in 2009, and today the system includes over 1,100 profiles of SFOs in 55 countries outside the USA. The database is updated daily, with profiles of further SFOs added weekly. Highworth's Single Family Offices Database is available on annual subscription via two alternative online publications, one covering 55 countries outside the US, the other covering countries within EMEA.