Costain Group Announces Pension Scheme Breakthrough, Doubled Dividends and £20m Share Buyback

On top, the Board’s current intention is a £20 million on-market share buyback in FY26, with details expected alongside full-year results on 10 March 2026. The capital structure will be assessed regularly, with the potential for additional future returns depending on net cash and forecast free cash flow.

Opinion: a larger dividend plus a buyback sends a clear signal. It points to confidence in cash generation and the order book. The buyback should be supportive of earnings per share in principle by reducing the share count, while the dividend policy offers a clearer income profile.

FY25 trading update – margins ahead, cash strong, revenue steady

Operationally, FY25 has been “another positive year”. Adjusted operating profit is expected to be in line with market expectations, with the adjusted operating margin expected to exceed the run-rate target of 4.5% during FY25. Closing net cash of £190 million is ahead of consensus of £171 million, primarily due to timing of working capital benefits that are expected to unwind in FY26 and beyond.

Revenue in H2 is similar to H1’s £525 million, reflecting the previously announced rephasing of HS2 and the completion of certain road projects. That’s consistent with the industry backdrop and does not detract from the margin progress.

Quick jargon check: “working capital timing” refers to the ebb and flow of cash tied up in receivables, payables, and contract balances. The company is clear that some of the FY25 benefit is timing-related and will unwind – a fair flag for FY26 cash flow modelling.

Key numbers and guidance signals

Metric	Figure	Context
Adjusted operating profit (FY25)	In line with expectations	Company-compiled consensus £46.4m
Adjusted operating margin (FY25)	Expected to exceed 4.5%	Run-rate target exceeded during FY25
Closing net cash (FY25)	£190m	Consensus £171m, timing benefits to unwind in FY26 and beyond
H1 25 revenue	£525m	H2 similar to H1
Dividend cover intention	3.0x adjusted earnings	Would almost double dividend cash payments in FY26 vs FY25
Share buyback intention (FY26)	£20m	On-market, details expected 10 March 2026
FY25 consensus	Revenue £1.13bn, Adj. EPS 14.0p	Company-compiled consensus

Order book momentum – nuclear and infrastructure wins

Since August’s H1 update, Costain has landed several material awards in core markets:

• Utilities Delivery Partner for Sellafield – worth up to £1 billion over 15 years.
• Five-year extension of project controls services with EDF – worth £75 million.
• Decommissioning project at Trawsfynydd nuclear power station in Wales – worth approximately £70 million.
• A place on the Eastern Highways Alliance framework contract.

These sit squarely in Costain’s target verticals – transport, water, energy, and defence – and should support revenue visibility. Management highlights strong markets, expanding frameworks, and high bid activity, underpinning confidence in further progress in FY26 and a step change in FY27 and beyond.

Opinion: the mix is attractive. Long-duration nuclear work provides multi-year visibility while frameworks can feed steady, lower-risk volumes. Execution, margin discipline, and cash conversion will determine how much of that pipeline translates into shareholder returns.

What this means for investors – the good, the caveats, the catalysts

Positives worth noting

• Capital returns unlocked – removal of dividend parity and no scheme contributions until January 2031 lighten structural cash demands.
• Clearer payout policy – a 3.0x cover intention provides transparency and suggests materially higher cash returns in FY26.
• Buyback adds flexibility – £20 million provides an EPS-supportive lever and signals balance sheet strength.
• Operational progress – adjusted margins expected above a 4.5% run-rate shows ongoing improvement.
• Balance sheet – £190 million net cash at FY25 year-end is ahead of consensus, giving headroom.

Balanced by a few watch-outs

• Working capital unwind – the company is explicit that FY25 cash benefited from timing effects that should reverse in FY26 and beyond.
• Programme timing – HS2 rephasing and road project completions can create revenue phasing noise, even if margins hold up.
• Confirmation risk – dividend policy implementation and buyback details are “current intentions” pending Board confirmation with FY25 results.

Upcoming catalysts to circle

• 10 March 2026 – FY25 results, expected confirmation of dividend policy and buyback details.
• FY26 guidance – clarity on the working capital unwind profile and free cash flow conversion.
• Order intake – updates on framework conversions and the cadence of nuclear and infrastructure awards.

Bottom line – a cleaner capital story with momentum building

This update reshapes the equity case. The pension scheme agreement removes a structural constraint, management is pointing to higher dividends and a £20 million buyback, and trading is steady with improving margins and strong net cash. There are sensible caveats around working capital and project phasing, but the direction of travel is positive.

If the Board confirms its intentions in March, Costain will have a clearer, more shareholder-friendly capital framework backed by a growing platform in transport, water, energy, and defence. For now, investors have a firmer line of sight on returns – and a few weeks to wait for the formal green light.