One of the world's major faiths with more than 20 million adherents, Sikhism is a religion which most people, including academics, seem to ignore. This introduction assumes no prior knowledge on the part of the reader. At the centre of the religion is the scripture, the Guru Granth Sahib, it is the focus of Sikh theology and practice to the extent that no one is allowed to come between it and the believer. There is no priesthood. A particular aspect of Sikhism is its relationship with and attitude to other religions, something of particular significance in our multi religious society.