Airspace modernisation - consultation on a UK Airspace Design Service

Closed 20 Dec 2024

Opened 22 Oct 2024

Feedback updated 12 Jun 2025

We asked

Our proposal was to introduce a single entity for modernising the design of UK airspace – which we are calling the UK Airspace Design Service (UKADS). The consultation sought views on what the UKADS could do and how we might set it up.

We proposed two phases:

In the first phase, the initial operating model for the UKADS function would be established as soon as possible and tasked to NATS (En Route) plc (NERL) through a change to its air traffic services licence. The UKADS scope would initially be to modernise the complex airspace around London. Subject to the UKADS capability and capacity, the DfT and CAA might expand this scope in the future.

The second phase, running in parallel but necessarily on a longer timeframe, would be to establish the end-state operating model for the UKADS, responsible for all airspace change in the UK. This would be likely to require primary legislation. It would be conditional on the outcome of a review of the first phase to determine the extent to which UKADS has succeeded in delivering its objectives, and what policy, process or legislation changes would address any unfulfilled objectives. We did not make specific proposals for this second phase, other than outlining the broad concept, because it would be subject to further consultation in the future.

We also proposed to reform the funding of airspace change UK-wide by creating a new UK Airspace Design Charge. This new charge would:

- meet the efficient costs of NERL to provide the UKADS, and

- capitalise a new UK Airspace Design Support Fund that would cover relevant costs of airspace change by UK airports that are outside the scope of the UKADS.

You said

We received 151 responses, of which 138 were submitted using this online consultation platform, 12 were submitted ‘off-line’ by email, and one by post.

There was general support for the UKADS concept from respondents to the consultation: 51% of responses said that it would, and 33% said it maybe would, improve delivery confidence in airspace modernisation (10% said it wouldn’t). There was also general agreement that the London TMA region should be the short-term scope of the UKADS: 47% of respondents agreed and 27% agreed, subject to additional considerations (16% disagreed).

24% of respondents agreed, and another 34% agreed subject to additional considerations, with NERL taking on the provision of UKADS in its first phase (20% disagreed). 20% of respondents agreed, and another 34% agreed with qualifications, to our proposals for reforming the funding of airspace change (13% said use another method).

For more information on responses to the consultation, including a more detailed breakdown of the figures above, please see our consultation response document, CAP 3106.

We did

On 17 March 2025 the Government announced the go-ahead for the UKADS and the Support Fund. The consultation responses have helped us to shape the detail and we published a consultation response document, CAP 3106, on
2 June 2025.

Key points:

  • NATS (En Route) plc (NERL) will be tasked with the UKADS.
  • The UKADS will initially focus on modernising the complex airspace around London, including airspace change required for any Heathrow third runway.
  • We are setting up a new UK Airspace Design Support Fund to help cover relevant costs of airspace modernisation in other parts of the UK.

It is proposed that these changes will be given effect through modifications to the NERL air traffic services licence, on which the Department for Transport and the CAA will each consult.

For more information on the outcome of the consultation and how we are taking your views into account, please see our consultation response document, CAP 3106 and the De Minimis Impact Assessment CAP 3106a. We have also published a Q&A supplement to the consultation response document and three policy papers. You can see these on our UKADS webpage where we will also post progress updates and other relevant information as a one-stop repository.
 

Next steps

Airspace modernisation will enable quicker, quieter and cleaner journeys by air. It will ensure that the UK’s airspace is fit for the future, enabling aircraft to fly more direct routes with optimised climb and descent profiles to and from energy-efficient cruising altitudes. This will benefit UK consumers through greater system capacity and better resilience to disruption. Crucially, it will help UK aviation achieve net zero greenhouse-gas emissions by 2050.

We are committed to establishing the initial UKADS operating model to be provided by NERL as soon as practicable. We will therefore be engaging regularly with NERL to ensure it can mobilise the UKADS by the end of 2025 and to work up transition arrangements.

By September 2025, the DfT and CAA will consult on a package of regulatory changes to make the process for airspace design decisions more proportionate while retaining a transparent, evidence-based process that involves impacted stakeholders. This package is likely to include the airspace change process
(CAP 1616) and masterplan (CAP 2156a), and the government’s Air Navigation Guidance and Air Navigation Directions.

The NERL licence modifications and the new UK Airspace Design Charge will require separate consultation and decisions in accordance with the statutory processes provided for in the Transport Act 2000. These include:

  • a CAA consultation on initial proposals for modifications to the NERL licence and further detail on the funding model
  • a CAA statutory consultation on NERL licence modifications and corresponding final decision.

Results updated 17 Mar 2025

The Government has confirmed that it will deliver a step change in how airspace modernisation is taken forward by establishing a UK Airspace Design Service (UKADS) and Support Fund. The Government and the CAA are now working with NATS, with the shared ambition for the UKADS to be up and running this year. 

Following the joint DfT and CAA consultation on the UKADS in autumn last year, we will publish a Consultation Response in due course providing greater detail on our plans for the UKADS and the rationale for the decisions taken. 

Where we have permission to publish, you are also able to see responses we have received by following the 'view submitted responses' link below. Additional responses that we received offline can be downloaded from the links at the bottom of this page.

By September 2025, the CAA and DfT will consult on a package of changes to the process for making airspace design decisions more proportionate, while retaining the important principles of a transparent, evidence-based airspace change process that will involve impacted stakeholders.

Published responses

View submitted responses where consent has been given to publish the response.

Overview

Purpose of this consultation

Modernisation of UK airspace is essential to ensure that it is fit for purpose in the future. Modernisation will benefit UK consumers through greater system capacity and better resilience to disruption. Crucially, it will help UK aviation to achieve net zero greenhouse-gas emissions by 2050.

Unlike in most other countries, UK airspace design is today delivered via a complex model, where multiple organisations, usually airports and air navigation service providers, each individually sponsor and fund airspace change proposals (ACPs), often with interdependent designs. This complexity puts at risk the ability to accommodate increasing demand for access to UK airspace and, eventually, innovative new technologies such as remotely piloted aircraft systems (drones).

This consultation proposes creating a single guiding mind responsible for future airspace design – a UK Airspace Design Service (UKADS) – to deliver this much-needed modernisation at scale and at pace, as envisaged by the CAA’s Airspace Modernisation Strategy published in January 2023.

This joint consultation by the Department for Transport (DfT) and UK Civil Aviation Authority (CAA), as co‑sponsors of airspace modernisation, seeks views on what the UKADS could do and how we might set it up.

At this stage no decisions have been made and these are proposals for consultation.

We summarise our proposals below. More detail appears in the full consultation document and the accompanying Regulatory Impact Assessment. To give us your views, please click on the link further down this page.

Outline of the proposal

Our proposal is to set up the UKADS in two phases:

In the first phase, the initial operating model for the UKADS function (UKADS1) would be established as soon as possible and tasked to NATS (En Route) plc (NERL) through a change to its air traffic services licence. The scope of UKADS1 would initially be to take forward (sponsor) ACPs to modernise the complex airspace around London. Subject to UKADS1’s capability and capacity, the DfT and CAA may expand this scope in the future.

UKADS1 would take on all aspects of each ACP, except for the safety case, implementation and (depending on the circumstances) managing aspects of stakeholder engagement, where the airport, air navigation service provider or other proposer of the change may take the lead on consulting with their stakeholders, supported by the ADS.

The second phase, running in parallel but necessarily on a longer timeframe, would be to establish the end-state operating model for the UKADS function (UKADS2). UKADS2 could be responsible for sponsoring and progressing all ACPs in the UK. UKADS2 would be likely to require primary legislation. This second phase would be conditional on the outcome of a review of the success of the first phase.

The detail of UKADS2, including its form and options for any new legislation, would be subject to further consultation in the future. We are not making proposals for UKADS2 in this consultation other than the broad concept.

A new airspace charge to fund all ACPs

Alongside our proposals for the UKADS, we propose to reform the funding of ACPs UK-wide by creating a new UK Airspace Design Charge which would:

  • meet the efficient costs of NERL to provide an airspace design service through UKADS1, and
  • capitalise a new UK Airspace Design Support Fund to cover relevant costs of the sponsors of eligible UK airport ACPs that are outside the scope of UKADS1.

Why are we making this proposal?

As the airspace change masterplan has progressed, it has become clear that the challenges of today’s airspace change model risk the delivery of much-needed modernisation:

  • the complex nature of UK airspace, particularly in the London area
  • neighbouring airports, each having their own requirements, proposing and funding individual ACPs where the airspace designs are interdependent
  • dispersed and scarce expertise in the industry sometimes leading to inconsistent standards and variable quality in ACP submissions
  • increasing demand from new or developing types of airspace user (such as drones, aerial taxis, high-altitude platforms, space launch) to have routine access to an integrated airspace for all users, but no obvious sponsor to take forward or fund any changes to the airspace design needed to accommodate them.

The consultation

What is in scope of this consultation (what we are consulting on)

This consultation is seeking your views on these proposals, including:

  • the overall concept of a UKADS
  • the scope of the UKADS’s responsibilities (whether geographically or in terms of the types or process stages of ACPs)
  • funding the UKADS and other UK airspace design change
  • suitable governance to ensure the UKADS delivers what is needed and on time
  • a proposed two-phase approach of UKADS1 and UKADS2
  • how to transition ACPs to UKADS1 from the current approach for making changes to airspace design
  • what modifications to the CAA's CAP 1616 airspace change process may be needed to accommodate the activities of a UKADS
  • the concept of the end-state UKADS2, which could eventually become solely responsible for progressing changes in UK airspace design.

What is not in scope of this consultation (what we are not consulting on)

We are not seeking views on any of the following:

  • the CAP 1616 airspace change process, other than where you believe the UKADS proposals might require it to be modified
  • specific ACPs past or present
  • issues with specific volumes of airspace, other than examples of where you believe a UKADS might address the issue
  • aspects of government environmental policy, including the Air Navigation Guidance (the statutory guidance given to the CAA by the Secretary of State on how it should take environmental impacts into account).

Consequently, the DfT and CAA will only take into account elements of responses to this consultation that are within scope.

Who is this consultation for?

This consultation is principally for anyone who uses, manages and designs airspace. It may also be of interest to anyone otherwise affected by airspace or the aircraft that use it. We have tried to keep technical terminology to the minimum as we appreciate that we have a wide range of stakeholders who will have an interest in the proposals for a UKADS. 

Should you have any questions about the consultation, please direct them to airspace.modernisation@caa.co.uk.

Webinar

The DfT and CAA held a webinar on 20 November 2024, from 1.30pm to 3pm to give an overview of the consultation and answer any questions. Watch now: UK Airspace Design Service Consultation - Webinar

How to respond to this consultation

The consultation will close at 23.59 on 20 December 2024 (a consultation period of eight weeks). We cannot commit to taking into account comments received after this date.

You can submit your comments by following the link below and answering the 21 consultation questions, which require a mix of multiple-choice and free-text answers. For convenience, you can also download all the questions in MS Word from the link under 'Related' below, but your response should be submitted through this online portal.

Our strong preference is that you complete the online consultation. While we will take account of responses that are submitted by other means, we ask that you arrange any such submission using the subject headings of the consultation document. Otherwise we will not be able to analyse your submission in the same way that we analyse the online responses.

Publication of responses

We will assume that all responses can be published on the CAA website. When you complete the online consultation there will be an option for you to hide your identity or refuse publication. (In any event, your email address will not be published.) In the interests of transparency, we hope you will not refuse publication. If you do send us a separate submission and it includes any material that you do not want us to publish, please also send us a redacted version that we can publish.

Please note that your response will be shared with the DfT, CAA and relevant employees of any consultancy firms that we contract to assist with the UKADS project.

You should be aware that information sent to and therefore held by us is subject to legislation that may require us to disclose it, even if you have asked us not to (such as the Freedom of Information Act and Environmental Information Regulations). Therefore, if you do decide to send information to us but ask that this be withheld from publication via redacted material, please explain why, as this will help us to consider our obligations to disclose or withhold this information should the need arise. Please see General privacy notice | Civil Aviation Authority (caa.co.uk) and DfT Personal Information Charter for more information.

(Added 6 December 2024)
Our starting point will be that we expect to publish any response in its entirety. We will use moderation in order to remove any unsuitable content, but not as a general means of censoring or filtering responses. Subject to the permissions given by the sender, we will publish an unredacted response with the name of the sender as long as it:

a) is not malicious or offensive in nature, and does not constitute a personal attack on a person’s character

b) doesn’t break the law; this includes potentially libellous (defamatory) material concerning third parties, condoning illegal activity, and breaching copyright

c) doesn’t incite hatred on the basis of race, religion, gender, nationality or sexuality or other personal characteristic

d) doesn’t include swearing, hate-speech or obscenity

e) doesn’t reveal personal details, such as private addresses, phone numbers, email addresses or other online contact details.

Irrespective of any text we redact for the purposes of publishing a response, the full content of any response will still be assessed for the purpose of the relevant analysis of responses, whether it relates to the consultation or other feedback.

Proposed changes to the NERL licence

On 21 November 2024 the CAA launched a complementary consultation providing illustrative information on changes to NERL air traffic service licence obligations, costs and charges that might be needed to implement proposals set out in this UKADS consultation. Please see CAP 3063: Economic Regulation of NERL: Illustrative proposals for modifying the licence to support the implementation of a UK Airspace Design Service for more information. This complementary consultation closed on 9 January 2025.

Audiences

  • Residents affected by aviation
  • Organisations affected by aviation
  • Community groups
  • Airline passenger
  • General Aviation
  • Commercial airlines
  • UAV operators
  • Air taxi operators
  • Military
  • Airport operators
  • Air Navigation Service Providers
  • Industry representative bodies
  • Eurocontrol
  • Air traffic control staff
  • Cargo shippers
  • Aerodrome Operators
  • Spaceflight
  • Flight operations
  • Government departments
  • Regulatory bodies
  • Elected political representatives
  • European Aviation Safety Agency
  • European Commission
  • International Civil Aviation Organization
  • National representative organisations or institutes
  • Workers' representative bodies
  • Autogyros
  • Balloons
  • Drone owner
  • Drone operator
  • Model aircraft enthusiast
  • eVTOL sector interest groups

Interests

  • Aircraft noise
  • Aircraft emissions
  • Local air quality
  • Flightpaths
  • Airspace design, categorisation and access
  • Airspace change proposals
  • Airspace investment
  • Air Traffic Control
  • Economic regulation
  • Capacity
  • Economic regulation
  • Punctuality
  • Safety
  • Air Traffic Control
  • Light aircraft
  • Drones
  • Model Aircraft
  • CAA Strategy
  • Spaceflight