Parliamentary boundary post, Beside 14 Gilnahirk Road, Belfast, Co. Antrim, BT5 7DG

A cast-iron boundary post standing beside 14 Gilnahirk Road in Belfast, marking the limits of the former Belfast Corporation's administrative jurisdiction and Pottinger District Electoral Division. Dating from 1918, it remains unaltered and in its original setting.

The post is of slightly tapered cylindrical profile, measuring approximately 3 feet high by 1 foot in diameter. It stands on a banded octagonal base and is topped with an oversailing flat octagonal cap featuring a slightly smaller fluted circular upstand. The front face displays the shield of Belfast Corporation's coat of arms, with an attached plaque below reading "Parliamentary/ and Municipal/ Boundary of/ Belfast/ Pottinger Division/ Pottinger Ward/ 1918". The plaque is secured with four countersunk screws. The post is embedded in the footpath along the east side of Gilnahirk Road, almost directly opposite Cherryvalley and at the centre line of the Knock River, which flows under the road at this point.

The County of the Borough of Belfast was created under the Local Government Act 1898 and established the following year. In 1918, under the Redistribution of Seats (Ireland) Act, the existing four parliamentary constituencies were abolished and replaced with nine new divisions: Cromac, Duncairn, Falls, Ormeau, Pottinger, St Anne's, Shankill, Victoria, and Woodvale. Pottinger Division encompassed a single municipal ward of the same name. This post marks the boundary of that parliamentary division and ward. The new constituencies were first used in the 1918 General Election on 14 December 1918, held under the Representation of the People Act 1918. This election was historically significant as the first in which all men over 21 and all women over 30 could vote—a major expansion from the previous restriction to male property owners. It was also the first election completed within a single day.

The post was likely originally erected when the County of Belfast was created in 1898. The dated plaque was affixed following the creation of the new electoral divisions in 1918. Evidence from Ordnance Survey maps dating from 1901–02 onwards confirms the boundary post's location. With the inception of the devolved Northern Ireland parliament in 1922, the Pottinger parliamentary constituency was abolished only four years after its creation, and the previous constituency of East Belfast was restored. However, the municipal wards continued in use, though some, including Pottinger, were later reconfigured and renamed. Belfast Corporation was superseded by Belfast City Council in 1973, and subsequent reorganisations followed. Pottinger Electoral Division was created in 1985 but abolished in 2014.

The post is relatively rare, as many such boundary markers have been lost to road widening and removal. It has group value with two nearby boundary posts also along the line of the Knock River.