Q3 Trading Update

Diploma PLC

16 July 2026

 

10-11 CHARTERHOUSE SQUARE, LONDON EC1M 6EE TELEPHONE: [phone]

16 July 2026

STRONG Q3. FURTHER 7% FY UPGRADE.

Diploma PLC, the value-add solutions group, issues a trading update for the nine months ended 30 June 2026.

•	Organic growth of 15%. Very strong Q3 performance, continuing momentum from H1.
•	Excellent execution in favourable market conditions in Controls, with continued double digit growth in IS Group, Clarendon, Peerless and Windy City Wire. Seals performance was a little stronger than H1. Resilient performance in challenging Life Sciences markets.
•	Acquisition of CDM completed on 25 June, establishing a strong US interconnect platform with attractive positions, principally in defence.
•	Strong acquisition pipeline and significant balance sheet headroom.
•	Further upgrade to FY26 guidance (at constant currency):
	◦	Organic revenue growth of 14% - up from 12%
	◦	Acquisitions announced to date add 6% to reported growth - unchanged
	◦	Operating margin of c.26.5% - up from c.25%

Operating profit growth of c.42%, representing a further c.7% upgrade to consensus¹.

END

Johnny Thomson, Chief Executive Officer, and Wilson Ng, Chief Financial Officer, will host a conference call for analysts and investors this morning at 8:00am (UK time).

Conference call dial in details:

• Dial in: [phone]

• Password: Diploma Q3

The next scheduled update is our full year results on 17 November 2026.

(1) Analyst consensus adjusted operating profit for FY26 is £454m, as at 15 July 2026.

For further information please contact:
Diploma PLC -	[phone]
Johnny Thomson, Chief Executive Officer
Wilson Ng, Chief Financial Officer
Holly Gillis, Head of Investor Relations
Teneo -	[phone]
Martin Robinson
Camilla Cunningham

NOTE TO EDITORS:

Diploma PLC is a value-add solutions group, providing critical products and services to customers across a wide range of markets.

We employ c.3,500 colleagues across the Group. Our businesses primarily operate across the US, Canada, the UK, Europe and Australia.

Diploma delivers sustainable quality compounding. Over the last five years, the Group has grown adjusted earnings per share (EPS) at an average of c.26% p.a. through a combination of organic growth and acquisitions.

Diploma is a member of the FTSE 100.

Further information on Diploma PLC can be found at www.diplomaplc.com

The person responsible for releasing this Announcement is Anna Lawrence, Group General Counsel & Company Secretary.

LEI: 2138008OGI7VYG8FGR19

 

END