Jump to content
Join the POSCON Public Discord Server! ×

United Kingdom Division


ATC in the UK
Revision: 07 Apr 2022

Air Traffic Control in the UK plays a major role worldwide; with the third largest aviation network in the world, and more than 80% of transatlantic flights crossing our airspace, it is paramount that all ATC systems and procedures are well-equipped to deliver excellent and efficient service.


There are multiple organisations that contribute to the procedures and systems that the UK has in-place. It is noteworthy to know some of these, as you may come across them within the community, and while controlling on the network.


Revision: 07 Apr 2022

The Civil Aviation Authority is the sole, and independent, aviation regulator in the United Kingdom, which was setup in 1972 to ensure a consistent level of safety.

It's primary functions are to ensure;

  • the aviation industry meets the highest safety standards,
  • efficient use of airspace,
  • the environmental impact of aviation on local communities is effectively managed and CO2 emissions are reduced,
  • the aviation industry manages security risks effectively.
The CAA also oversees all airspace proposals, and regulates some airports financially. The organisation publishes Civil Aviation Publications (CAP), which set out the standards and behaviours expected from ATC, pilots, airports and airlines. They also handle all pilot and ATC licensing, including medical certifications, in the UK.


The authority does not regulate any military activities, and focuses solely on civil aviation.


Civial Aviation Publications (CAP)
Revision: 07 Apr 2022

The CAA publishes CAPs to ensure the UK airspace is as safe and efficient as possible, while standardising all activities in the UK aviation sector. These are usually long documents, however there are a few to be aware of, and may be helpful on your journey in POSCON UK.


While we do not expect members to read CAPs cover-to-cover, all ATC procedures within POSCON UK are derived from these publications, and as such they will always contain the most up-to-date information.


Revision: 07 Apr 2022

CAP 774 UK flight information services 2nd ed., November 2013 CAP 774 - UK Flight Information Services

While MATS Part 1 provides general information on Air Traffic Services provision inside controlled airspace, CAP 774 provides information on UK Flight Information Services.


ATSOCAS (Air Traffic Services Outside Controlled Airspace), are provided to aircraft in Class G airspace (uncontrolled; OCAS). When inside controlled airspace, a service under MATS Part 1 will be provided. For most radar equipped, Class D airspace (most frequent airport airspace classification), this is a Radar Control Service.


This document sets out the four types of services available OCAS;

  • Basic Service
  • Traffic Service
  • Deconfliction Service
  • Procedural Service

When operating an information/radio, approach, or enroute position this document may come in handy, though the services are described later in the Training Centre.


CAP 774 - UK Flight Information Services can be accessed via the CAA documentation system.


Did You Know?

ATSOCAS replaced the Flight Information Service that used to be provided in the UK in 2009. The CAP name, however, along with the general term for these service, never changed.


Important Information

By using this site, you agree to our Terms of Use, Privacy Policy, and Guidelines.