Two red-brick guardhouses and their gatepiers mark the controlled threshold of the western section of the enormous First World War explosives factory.
Quick facts
- Date
- 1916; mid- and late-twentieth-century alterations
- Architect / designer
- Ministry of Munitions
- Type
- Pair of single-storey brick guardhouses with gatepiers
- Designation
- Listed building, Category B (LB52612)
- OS grid reference
- NY 24875 65420
Architecture and continuing use
The detached guardhouses are roughly L-shaped, single-storey structures with raised brick quoins and sills. Each has a timber veranda facing the gateway, carried on concrete plinths, and a swept hipped slate roof. Two large concrete-and-brick gatepiers retain separate pedestrian openings and the broad central route once used by factory traffic.
Its story
The Ministry of Munitions built the entrance in 1916, shortly after workers began arriving at HM Factory Gretna. The guardhouses controlled movement into a complex producing cordite on an exceptional scale. Later office alterations and additions changed parts of their interiors and exteriors, but the paired entrance arrangement survives and was listed in 2023.
Why it is included
The group makes the factory’s security, workforce movement and monumental scale legible at a precise threshold rather than through production remains alone.
What to notice
- Paired verandas facing the former gateway.
- Raised brick quoins around otherwise functional buildings.
- Separate pedestrian gaps beside the wide central entrance.
Reading the surroundings
The approach is a private minor road and the buildings are not visitor premises. Do not enter, pass barriers or inspect boarded openings; use museum interpretation and lawful public viewpoints.
Timeline
- 1916 The Ministry of Munitions established guarded access to the Eastriggs factory section.
- Mid 20th century New internal arrangements adapted both small buildings to later requirements.
- Early 2000s Much of the wider site ceased its long-running storage role.
- 2023 The guardhouses and gatepiers received Category B listing.
What we know — and what remains uncertain
The listing excludes a later toilet extension and records many blocked openings. Present ownership, structural condition and use should not be inferred from the historic plan.
Sources & further reading
- Historic Environment Scotland: HM Factory Gretna Guardhouses and Gatepiers, LB52612 — Current designation status, statutory identity, official mapped point, date, fabric and significance.
- Trove: HM Factory Gretna Guardhouses — National collection entry corroborating designation identity, mapped position and related archive material.
- Historic Environment Scotland: Eastriggs cordite-factory consultation — Public designation evidence explaining the surviving factory sections and their national industrial significance.
- The Devil’s Porridge Museum: builders of HM Factory Gretna — Museum research describing the simultaneous construction of the vast factory and its worker townships.
Location
OS grid reference NY 24875 65420 · Location confidence: High for the current HES designation point; public text separately qualifies component extent, access and any present-use uncertainty. · Select the marker to open its satellite view in Google Maps. On desktop, drag Pegman (the yellow figure) onto a blue road. On mobile, turn on the Street View layer and tap a blue road. Other photo markers may be user-contributed.
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