1708 To 1832
As a result of the union of Scotland with England and Wales and the creation of the Parliament of Great Britain in 1707, Scotland had 48 constituencies representing seats for 45 MPs in the House of Commons of the new parliament at Westminster. Westminster was previously the meeting place for the Parliament of England, which covered both England and Wales.
Scottish Westminster constituencies were first used in the 1708 general election. Prior to that election Scotland was represented in the new parliament by MPs who were co-opted as commissioners of the former Parliament of Scotland.
In the Parliament of Great Britain, Scotland had 15 burgh constituencies and 33 county constituencies, with each representing a seat for one MP. The county constituencies included, however, three pairs of alternating constituencies, so that only one member of a pair was represented at any one time. Therefore Scotland had more constituencies than seats. With the exception of Edinburgh, the burgh constituencies consisted of districts of burghs.
1708 boundaries were used for all subsequent elections of the Parliament of Great Britain.
The creation of the Parliament of the United Kingdom in 1801 was a merger of the Parliament of Ireland with the Parliament of Great Britain. The first general election of this new parliament was the general election of 1802, and there was at that stage no change to the boundaries of any pre-existing Westminster constituency.
1802 boundaries were used also in the general elections of 1806, 1807, 1812, 1818, 1820, 1826, 1830 and 1831.
Read more about this topic: Scottish Westminster Constituencies