List of Royal Observer Corps / United Kingdom Warning and Monitoring Organisation Posts (A–E)

The Royal Observer Corps (ROC) and its successor organisation, the United Kingdom Warning and Monitoring Organisation (UKWMO), maintained a network of underground monitoring posts across the United Kingdom. These posts were designed to provide data on nuclear explosions and fallout in the event of a nuclear attack. This article lists posts, identified by their unique reference number, that begin with the letters A through E. Each post typically comprised a small underground bunker equipped with instruments for measuring blast effects, nuclear radiation levels, and any subsequent fallout.

These posts formed a crucial part of the UK's civil defence infrastructure during the Cold War. The information gathered would have been used to inform the government and emergency services, and to provide warnings to the public. The posts were manned by civilian volunteers who were trained in observation and reporting procedures. The ROC was stood down in 1991, marking the end of its active role, and the UKWMO was subsequently disbanded. Many of these posts have since been decommissioned, though some have been preserved as historical sites.

Individual post entries (where available) may include the following information:

• Post Number: The unique identifier for the post.
• Location: The geographical location of the post.
• Grid Reference: Ordnance Survey grid reference for precise location.
• Status: Current status of the post (e.g., demolished, extant, accessible).
• Date Opened: Date the post became operational.
• Date Closed: Date the post was decommissioned.
• Condition: Description of the post's current condition.
• Observations: Any significant features or details about the post.

Due to the large number of posts and varying levels of available information, this list may be incomplete and subject to ongoing research and updates.