Here's an excerpt:
"Recapping the religion's growth in 2006, Rev. Adams pointed out that in the last year more than 1,500 new centers, missions and churches of Scientology were opened, including large new central churches in both London and Berlin. With new groups this year in Afghanistan, Niger, and Bahrain the international Scientology presence now totals more than 7,500 centers, missions and churches in 163 nations."
Wow! And it's only a little over 50 years old!
See www.scientology-london.org for more info.