Rundvirke / Calders & Grandidge merger inquiry

The Competition and Markets Authority (CMA) investigated the anticipated acquisition by Rundvirke Industrier AB of Calders & Grandidge (Boston) Limited.

 Statutory timetable

Date Action
27 November 2025 Phase 1 decision announced
23 October 2025 Launch of merger inquiry
11 September 2025 to 25 September 2025 Invitation to comment

Phase 1

CMA clearance decision

27 November 2025: The CMA has cleared the anticipated acquisition by Rundvirke of Calders & Grandidge. The full text of the decision will be published shortly.

Launch of merger inquiry

23 October 2025: The CMA announced the launch of its merger inquiry by notice to the parties.

Invitation to comment: closed

11 September 2025: The CMA is issuing this preliminary ‘invitation to comment’ to allow interested parties to submit to the CMA any initial views on the impact that the transaction could have on competition in the UK. The CMA has not yet launched its formal investigation into this transaction. This invitation to comment is the first part of the CMA’s information-gathering process.

To assist it with this assessment, the CMA invites comments on the transaction from any interested party.

Pre-notification

The CMA has received the necessary information from the parties to commence pre-notification.

Contact

Please send written representations about any competition or public interest issues to:

Privacy notice

Your name and contact details are your personal data. In collecting, receiving, storing, accessing and using your personal data, the CMA, as controller, is processing your personal data. The CMA processes personal data in accordance with data protection law. The CMA is processing your personal data so that it can contact you again, should it need further help or information from you, in order to carry out its merger work under Part 3 of the Enterprise Act 2002. For more information about how the CMA processes personal data and your rights relating to that data, please see our Privacy notice.

Updates to this page

Published 11 September 2025
Last updated 27 November 2025 show all updates
  1. Clearance decision announced.

  2. Commencement notice published.

  3. First published.