The County of Bute, also known as Buteshire, is a historic county and registration county of Scotland. Now replaced by Argyll and Bute for the Isle of Bute, with the Argyll and Bute Council. The Isle of Arran and The Cumbraes are now in North Ayrshire Council area. Since the implementation of the Local Government etc. Act 1994, on the 1 Apri…The County of Bute, also known as Buteshire, is a historic county and registration county of Scotland. Now replaced by Argyll and Bute for the Isle of Bute, with the Argyll and Bute Council. The Isle of Arran and The Cumbraes are now in North Ayrshire Council area. Since the implementation of the Local Government etc. Act 1994, on the 1 April 1996.