Roofing materials

The CMA is investigating suspected anti-competitive arrangements in the UK roofing materials sector under the Competition Act 1998.

Case reference: 50477

Case timetable

Date Action
August 2018 Decision taken to continue the investigation (further update by the end of December 2018)
May 2018 Investigation continuing and assessing evidence (further update by the end of July 2018)
December 2017 Decision taken to proceed with the investigation (further update by the end of April 2018)
July to December 2017 Initial investigation: inspections, information gathering, including issuance of formal or informal information requests and parties’ responses

Case information

On 11 July 2017, the CMA launched an investigation into suspected anti-competitive arrangements in the UK roofing materials sector which may infringe Chapter I of the Competition Act 1998 (CA98) and/or Article 101 of the Treaty on the Functioning of the European Union (TFEU).

No assumption should be made at this stage that the CA98 has been infringed. The CMA has not reached a view as to whether there is sufficient evidence of an infringement of competition law for it to issue a statement of objections to any of the parties under investigation. Not all cases result in the CMA issuing a statement of objections.

If the CMA issues a statement of objections, it will provide the addressee(s) of that statement of objections with an opportunity to make written and oral representations. See here for further detail of the CMA’s Procedures in Competition Act cases.


Investigation team leader

James Allen (

Assistant project director

Eva Nickel (

Project director

Emma Lindsay (

Senior responsible officer

Howard Cartlidge (

Published 13 July 2017
Last updated 17 August 2018 + show all updates
  1. Case timetable updated.
  2. Update added for May 2018.
  3. Timetable updated.
  4. First published.