LONDON, May 19, 2026, 12:04 BST
Diploma PLC shares jumped on Tuesday after the FTSE 100 specialist distributor raised its 2026 outlook again, helped by demand from aerospace, defence, datacentres and energy customers. The stock was up 4.75% at 6,940p at 11:49 BST, after trading as high as 7,090p, while the FTSE 100 was up 0.64% at 10,390.27. ADVFN UK
The rally matters because investors got more than a routine first-half beat. Diploma lifted its full-year organic revenue growth target to 12% from 9%, said acquisitions announced so far should add 6% to reported growth, and forecast adjusted operating profit growth of more than 30%, a 6% upgrade to consensus. London South East
Organic growth means sales growth stripped of currency moves and acquisitions or disposals, a like-for-like way to judge whether existing businesses are growing. Adjusted operating profit excludes items that can blur trading performance, such as acquisition-related costs; adjusted operating margin is that profit divided by revenue. Diploma PLC
Revenue rose 17% to £851.1 million in the six months to March 31, while adjusted operating profit increased 33% to £208.9 million. Adjusted earnings per share rose 36% to 109.2p, and Diploma raised its interim dividend by 5% to 19.1p. Diploma PLC
Chief Executive Johnny Thomson called it a “great” first half and said Diploma had “strong positions in attractive, structurally growing markets.” He added that the second half had “started well,” while still pointing to an uncertain backdrop. London South East
The Controls division did most of the heavy lifting. Organic growth there was 26%, with Peerless, Clarendon, IS Group and Windy City Wire benefiting from aerospace, defence, datacentre and energy markets; Seals grew 2% organically and Life Sciences grew 4% in tougher healthcare markets. Diploma PLC
Dealmaking also helped the story. Diploma said it had struck 15 deals in the last 12 months for about £310 million, including seven since its first-quarter update, among them CDM, a U.S. interconnect business with about $80 million of revenue that still needs regulatory approval. London South East
The size of the move looked stock-specific rather than just another good day for UK industrials. RS Group was up 0.33% at 612p at 11:46, while IMI, another London-listed engineering name, showed a 1.12% rise to 2,720p on its own investor page. RS Group
The upgrade followed a big March reset, when Diploma raised its organic growth outlook to 9% from 6% and lifted its operating margin target to about 25% from about 22.5%. That earlier move had already flagged strong trading in Controls, including aerospace demand at Peerless and datacentre demand at Windy City Wire. Investegate
But the new bar is higher. Diploma itself flagged strong second-half comparators, some expected moderation at Peerless, and risks from exchange rates, general economic conditions and the wider business environment. A softer order book, a delayed acquisition close or weaker industrial demand would make the latest upgrade harder to defend. Diploma PLC
