Harbhajan Singh Khalsa of Sikhism, praised Singh highly for his work in spreading Sikhism in the West. In his words, "Glory be to the Guru who performs His work in the Western Hemisphere through this instrument. Blessed be those who have learned from him the teachings of the Guru, to accept and follow those teachings in unswerving faith and in humble recognition of the good that Harbhajan Singh has done in furthrance of the Guru's mission." Dr. Fauja Singh, M.A., Ph.D, Professor and Director, Department of History and Punjab Historical Studies, Punjabi University, Patiala, India praised Singh's marriage of yoga and religion, saying
Harbhajan Singh at The Oval in London, was partly attributed to his marketability. Harbhajan had generated a large personal following in the western London suburb of Southall, which boasts a majority Punjabi Sikh population, when he lived there in 1998 while training under Fred Titmus. In 2006 Harbhajan's endorsements generated controversy when he appeared without his turban in an advertisement for Royal Stag whisky. This angered many orthodox Sikhs, leading to anti-Harbhajan protests in the Sikh holy city of Amritsar, with effigies of Harbhajan being burnt. The Sikh clergy and Shiromani Gurdwara Prabandhak Committee demanded an apology from him and asked Seagram's