London, Oct 29 (ANI): British Prime Minister David Cameron unveiled an encyclopaedia on Hinduism in London. The encyclopaedia has been published by the India Heritage Research Foundation founded and chaired by Swami Chidanand Saraswati, who was present at the gala event. Sharing his knowledge on the philosophy of Hinduism, Saraswati said the encyclopaedia gives an insight into theories of the religion. The Hindu Diaspora in Britain has emerged to be flourishing. Members are well established in professional fields -law, media, medicine, engineering, and accounting -and in many branches of business.