Over 24 million people have tried Alpha in over 100 countries, and it has been translated into over 100 different languages. Developed as a short course at HTB in London, in 1990 Nicky Gumbel took over running Alpha and found that many people outside of the church wanted to explore the Christian faith. Alpha now runs in every part of the global church, including the Catholic Church, the Orthodox Church and all mainline Protestant denominations.