Thornwood Avenue update: September 2023 (first update)

Information for residents

Ground collapse – Thornwood Avenue, Ayr

This fact sheet provides information about the recent ground collapse on Thornwood Avenue and the work that the Coal Authority will be required to carry out.

We understand that the ground collapse on Thornwood Avenue will be causing concern and disruption for a number of you and we thank you for your patience and understanding during the current situation. The Coal Authority were called on to site on Sunday 26th March due to a collapse within the road and grass area on Thornwood Avenue. The site has been secured to create an exclusion zone.

We have a number of processes in place to ensure public safety, these include:

  • Ground monitoring surrounding the collapse area with weekly visits to continue monitoring.
  • Ongoing in-person visual monitoring on a regular basis.
  • Remote visual monitoring.
  • Stone filling for on-going movement of the collapse.

Ground Investigations

It is important that we understand what has caused the collapse. The Coal Authority are aware of a recorded mine shaft in this area and the possibility of shallow coal mine seams. We thank you for your patience and cooperation while we carried out these vital ground investigation works which confirmed the location and extent of the mine shaft.

We apologise for the delay in re starting works on site and want to assure you we are working towards a final conclusion including permanent treatment and reinstatement. We have experienced delays outside of our control but are working towards being back on site, which we envisage being the start of October. We will contact you as soon as we have a confirmed date for recommencement of works on site and include further information on duration and activities.

How will the works affect me?

We thank you for your patience and understanding while the drilling works were carried out and your ongoing support while we work towards a solution to this complex incident. We will inform all residents with future key dates of our work as the project moves forward.

We apologise for any inconvenience caused and are grateful for your support and patience.

Contact us

Please contact us if there is anything you wish to discuss. The reference number for this project is P-045290.

Customer Services Team

If you have any questions about our work please call our customer services team on 0345 762 6848 or 01623 637 000 Monday to Friday 9am to 5pm or email us at

To report an emergency, please contact: 0800 288 4242 (24 hours a day, 7 days a week) For more information about the Coal Authority, please visit

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