as chief executive of Companies House. Scotland The Registrar of Companies for Scotland, is based at Companies House, Edinburgh, and is responsible for the registration of companies in Scotland. The current registrar is Lisa Davis. Northern Ireland The Registrar of Companies for Northern Ireland is based at Companies House, Belfast, and is responsible for the registration of companies in Northern Ireland. The current registrar is Lynn Cooper. Undertakings registered Companies Companies House acts as registrar for the following types of company: Public companies limited by shares Public companies limited by guarantee Societates Europaeae, which, following Brexit, can no longer be formed in the UK, with any SEs remaining registered in the UK on 1 January 2021 automatically converted to UK Societates Unlimited companies Private companies limited by shares Private companies limited by guarantee Community interest companies, on behalf of the Office of the Regulator of Community Interest Companies Companies incorporated by Royal Charter Some overseas companies with a physical presence in the UK Other undertakings Despite its name, Companies House acts not only as registrar for companies, but also for the following undertakings: Limited Partnerships Limited Liability Partnerships European economic interest groupings, which, following Brexit, can no longer be formed in the UK, with any EEIGs remaining registered in the UK on 1 January 2021 automatically converted to UK economic interest groupings Undertakings for which Companies House does not act as registrar Companies House does not act as registrar for the following undertakings: Building societies, for which the Financial Conduct Authority acts as registrar Charitable incorporated organisations, for which the Charity Commission acts as registrar Community benefit societies, for which the Financial Conduct Authority acts as registrar Co-operative societies, for which the Financial Conduct Authority acts as registrar Credit unions, for which the Financial Conduct Authority acts as registrar Friendly societies, for which the Financial Conduct Authority acts as registrar Partnerships, for which there is no registrar; the only registration required is with HM Revenue and Customs in order to submit tax returns Register of Companies The Register of Companies is the index of every undertaking registered with Companies House. Names Uniqueness Every undertaking registered with Companies House must have a unique name. Whether a name is unique or not is determined by Companies House; certain terms and punctuation, and characters after the first 60, are completely disregarded when assessing the uniqueness of a name, and other characters, although strictly