Companies must advise Companies House of their intended registered office (the official address of the company), which may be in England and Wales, in Scotland, or in Wales. Consequently, on incorporation, companies will be either 'Registered in England and Wales', 'Registered in Scotland', or 'Registered in Wales'. Effectively, companies in England must register in England and Wales, companies in Scotland must register in Scotland, while companies in Wales may choose to register in either England and Wales, or in Wales. Although their legal registration is in either England and Wales, or in Wales, according to Companies House companies must display the company registered office location in a manner similar to one of the following suggested formats:  The Companies House office in Cardiff handles companies incorporated in England and Wales. These companies are subject to English law. Until 2011 there was another office at Nantgarw, Wales. The London office at Petty France is purely a facility to file and view documents, which are then processed in Cardiff. The Registrar of Companies for England and Wales is the Chief Executive Louise Smyth. The role of Chief Registrar is not a political one and the incumbent is a civil servant. All companies registered in England and Wales have 8-digit registration numbers. The Edinburgh office handles companies incorporated in Scotland. These companies are subject to Scots law. Scottish company registration numbers are prefixed by the letters SC. The Companies Act 2006 was fully implemented on 1 October 2009 and the Northern Ireland companies register was fully integrated into Companies House. Companies House maintains a satellite office in Belfast, headed by the Registrar of Companies for Northern Ireland. Before 1 October 2009 all limited companies in Northern Ireland were registered with the Department of Enterprise, Trade and Investment and were subject to Northern Ireland law. The many types of companies include:  All companies are required to appoint one or more directors (the minimum number is dependent upon the company type) and generally it is up to the members to appoint the people they believe will run the company well on their behalf. The only restrictions that prevent anyone becoming a director are they must be at least 16 and:   In February 2008, "The Times" and "Computer Weekly" broke a story that almost 4,000 of the names on the Companies House register of directors were on international watchlists of alleged fraudsters, money launderers, terror financiers and corrupt officials. The results came from Datanomic who had screened the 6.8 million names on the register against a World-Check database of high risk individuals and businesses. The exercise also revealed more than 1,500 disqualified company directors were being allowed to run other UK companies as Companies House was not checking names against its register of disqualified persons.