Research memoDiploma PLC (DPLM.L) · LSEMemo of October 18, 2026

Diploma earnings: guidance and next results

Diploma's next results are due November 17, 2026. Diploma's cash conversion is the one thing to watch.

November 17, 2026
Next results
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Every number traced to Diploma's filings8 chapters · 14,966 words141 sources cited

What has Diploma guided for FY2026?

Management has moved from expecting a good year to demanding an exceptional one. At November 2025 results, Diploma expected 6% organic growth for FY2026. By May, it expected 12%. In July, the target reached 14.0% organic growth and a 26.5% operating margin for FY2026. Acquisitions were expected to add 6.0% to reported growth, implying operating profit growth of about 42.0%.

Diploma’s medium-term model is more measured. It assumes slower organic and total revenue growth, a 20.0% adjusted margin, prudent leverage and a progressive dividend. It is a guide to a sustainable business, not a promise that the exceptional FY2026 pace will continue.

Targets and guidance in force
PeriodLowHighDate given
Organic revenue growth (FY2026)FY2026 (constant currency)14.0%14.0%16 July 2026
Acquisitions announced to date add to reported growthFY2026 (constant currency)6.0%6.0%16 July 2026
Operating marginFY2026 (constant currency)26.5%26.5%16 July 2026
Operating profit growthFY2026 (constant currency)42.0%42.0%16 July 2026
Organic revenue growth (medium-term)Medium-term financial model5.0%5.0%18 November 2025
Total revenue growthMedium-term financial model (constant currency)10.0%10.0%18 November 2025

What this means. The company’s 20% adjusted operating margin target is a minimum, so actual margins are meant to be 20% or higher.

What has Diploma said about promises kept?

There is encouraging evidence: Diploma said its FY2025 results were ahead of expectations, and the July update described another upgrade. But those examples do not establish a complete record of beating forecasts. The next result must show both that trading held through the year-end and that acquired businesses contributed as planned.

What has Diploma's revenue and profit done in the last eight reported periods?

For the six months to March 2026, revenue and the company’s earnings measure grew faster than net income. Diluted EPS rose only modestly. This means the businesses performed strongly, but acquisition amortisation, financing effects and other adjustments continued to absorb part of the improvement before it reached shareholders.

The last eight reported periodsGBP millions; per share in GBP
6 months to Mar 20266 months to Sep 20256 months to Mar 20256 months to Sep 20246 months to Mar 20246 months to Sep 20236 months to Mar 20236 months to Sep 2022
Revenue851.1796.0728.5725.1638.3617.5582.8564.3
Adjusted earnings146.6128.5107.5108.287.289.974.175.4
Net income100.389.195.871.657.758.459.359.1
EPS, diluted0.740.660.710.530.430.430.470.47

What this means. The September six-month figures are calculated by subtracting the March six-month result from the full-year result, rather than being reported separately.

What should readers watch in Diploma's next results?

The full-year results due on 17 November 2026 will show whether Diploma converted its upgraded outlook into both profit and cash. A strong result must be more than a high operating margin: it must explain where growth came from and what it required financially.

From the full memo · 1. The business

Diploma sells specialist products and practical support to customers in healthcare, industry and infrastructure. Its financial story is the movement of money through those specialist businesses: customers pay for dependable solutions, while Diploma pays for products, people, stock and growth.

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