Costain Group PLC
LSE:COST

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Costain Group PLC
LSE:COST
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Price: 187.2 GBX 0.32% Market Closed
Market Cap: £499.3m

P/E

13.4
Current
42%
More Expensive
vs 3-y average of 9.4

Price to Earnings (P/E) ratio shows how much investors pay for each dollar of a company`s earnings. It`s calculated by dividing the company`s market value by its total earnings.

P/E
13.4
=
Market Cap
GBX505.7m
/
Net Income
£37.3m

Price to Earnings (P/E) ratio shows how much investors pay for each dollar of a company`s earnings. It`s calculated by dividing the company`s market value by its total earnings.

P/E
13.4
=
Market Cap
GBX505.7m
/
Net Income
£37.3m

Valuation Scenarios

Costain Group PLC is trading above its 3-year average

If P/E returns to its 3-Year Average (9.4), the stock would be worth GBX131.51 (30% downside from current price).

Statistics
Positive Scenarios
0/4
Maximum Downside
-99%
Maximum Upside
No Upside Scenarios
Average Downside
67%
Scenario P/E Value Implied Price Upside/Downside
Current Multiple 13.4 GBX187.2
0%
3-Year Average 9.4 GBX131.51
-30%
5-Year Average 8 GBX110.99
-41%
Industry Average 0.2 GBX2.51
-99%
Country Average 0.2 GBX2.9
-98%

Forward P/E
Today’s price vs future net income

Today's Market Cap Net Income Forward P/E
GBX505.7m
/
Jan 2026
£37.3m
=
13.4
Current
GBX505.7m
/
Dec 2026
£40.5m
=
12.5
Forward
GBX505.7m
/
Dec 2027
£46.8m
=
10.8
Forward
GBX505.7m
/
Dec 2028
£49.7m
=
10.2
Forward

Forward P/E shows whether today’s P/E still looks high or low once future net income are taken into account.

Peer Comparison

Market Distribution

Higher than 95% of companies in United Kingdom
Percentile
95th
Based on 2 117 companies
95th percentile
13.4
Low
0 — 0.1
Typical Range
0.1 — 0.3
High
0.3 —
Distribution Statistics
United Kingdom
Min 0
30th Percentile 0.1
Median 0.2
70th Percentile 0.3
Max 828.3

Costain Group PLC
Glance View

Costain Group Plc engages in the provision of technology-based solutions for infrastructure projects. The company is headquartered in Maidenhead, Berkshire and currently employs 3,311 full-time employees. The company works with its clients in their business and investment planning to develop solutions to meet changing needs, leveraging its deep client insight, edge expertise and a range of capabilities. The company improves its clients’ business performance by providing value adding consultancy and advisory services, leveraging its deep client insight, edge expertise and a range of capabilities. The company transforms business performance and infrastructure intelligence through the development and integration of edge digital technology solutions built on its client insight. The company combines its deep client insight and edge expertise to increase capacity, improve resilience and minimize downtime. The company operates through two segments: Transportation and Natural Resources.

COST Intrinsic Value
178.56 GBX
Overvaluation 5%
Intrinsic Value
Price GBX187.2
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