Scientology contribute a proportion of their income and comply with the Religious Technology Center (RTC) and its standards. Operating Thetan levels are offered only at Scientology's Advanced Organizations (Los Angeles, Sydney, East Grinstead and Copenhagen). The Flag Service Organization in Clearwater, Florida offers OT levels VI and VII. The Scientology ship "Freewinds" offers OT VIII. In 1955, Hubbard created a list of 63 celebrities targeted for conversion to Scientology. In a church policy letter in 1973, L. Ron Hubbard wrote, "The purpose of [the] Celebrity Centre is, to forward the expansion and popularization of Scientology through the arts." Scientology operates eight
Scientology in the United Kingdom States, where in November 1980 they were sentenced to two to six years in prison. In a House of Commons of the United Kingdom speech on 25 July 1968, Minister for Health Kenneth Robinson said Scientology's practices were "a potential menace to the personality and well-being of those so deluded as to become its followers". He described Scientology as "so objectionable that it would be right to take all steps ... to curb its growth", and so introduced a ban on the immigration of foreign Scientologists. Until then, the Hubbard College of Scientology had, as a recognised educational institution, been