British currency in the Middle East already risen in value against the pound sterling as a result of sterling's devaluation in 1967, and so the new Omani rial was not equal in value to the dinars in the nearby territories. The currency units that are used in Israel, Jordan, Iraq, Kuwait, Bahrain, Oman, and the Yemen are all descended from the pound sterling unit, while the currency units that are used in Saudi Arabia, Qatar, and the United Arab Emirates are all descended from the Maria Theresa Thaler. This largely explains the factor of ten difference in value on average between Bahrain, Kuwait and Oman on
Decimal Day Advancement of Science and the Association of British Chambers of Commerce, followed by the success of decimalisation in South Africa, prompted the Government to set up the "Committee of the Inquiry on Decimal Currency" (Halsbury Committee) in 1961, which reported in 1963. The adoption of the changes suggested in the report was announced on 1 March 1966. The Decimal Currency Board (DCB) was created to manage the transition, although the plans were not approved by Parliament until the Decimal Currency Act in May 1969. Former Greater London Council leader Bill Fiske was named as the Chairman of the Decimal Currency