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London SecurityLSE:LSC 75 Shiller PE Ratio is 20.17 as of Sep. 11, 2026, which is 10% above its 10-year median of 18.35. GuruFocus rates LSE:LSC with a GF Score™ of 75/100 and a GF Value™ of £39.81 (Fairly Valued). The stock has 6 warning signs investors should review. Among 549 Business Services companies, London Security ranks worse than 53.73% on this metric.
As of today (2026-09-11), London Security's current share price is £36.50. London Security's E10 for the fiscal year that ended in Dec25 was £1.81. London Security's Shiller PE Ratio for today is 20.17.
The historical rank and industry rank for London Security's Shiller PE Ratio or its related term are showing as below:
LSE:LSC'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 12.71 Med: 18.35 Max: 27.14
Current: 20.19
During the past 13 years, London Security's highest Shiller PE Ratio was 27.14. The lowest was 12.71. And the median was 18.35.
LSE:LSC's Shiller PE Ratio is ranked worse than 53.73% of 549
companies
in the Business Services industry
Industry Median: 18.86
vs LSE:LSC: 20.19
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
London Security's adjusted earnings per share data of for the fiscal year that ended in Dec25 was £1.940. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is £1.81 for the trailing ten years ended in Dec25.
Shiller PE for Stocks: The True Measure of Stock Valuation
London Security (LSE:LSC) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
London Security Shiller PE Ratio Related Terms
London Security Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for London Security's Shiller PE Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
LSE:LSC vs ALLE, MSA, ADT: Shiller PE Ratio Comparison
For the Security & Protection Services subindustry, London Security's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
London Security Shiller PE Ratio vs Business Services Industry
For the Business Services industry and Industrials sector, London Security's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where London Security's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
London Security's Shiller PE Ratio for today is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
London Security's E10 for the fiscal year that ended in Dec25 is calculated as:
For example, London Security's adjusted earnings per share data for the fiscal year that ended in Dec25 was:
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
London Security (LSE:LSC) has a Shiller PE Ratio of 20.17 as of Sep. 11, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on London Security and its competitors. This is 10% above median its historical median of 18.35. Over the past decade, London Security's Shiller PE Ratio has ranged from 12.71 to 27.14. According to the industry distribution chart, London Security ranks #295 out of 549 companies in the Business Services industry, placing it in the top 53.7%.
Is London Security's Shiller PE Ratio too high?
London Security's current Shiller PE Ratio of 20.17 is 10% above median its 10-year median of 18.35. Over the past 10 years, this metric has ranged from a low of 12.71 to a high of 27.14. The Business Services industry median Shiller PE Ratio is 18.86. London Security's value of 20.17 is 6.9% above this industry median. Based on the distribution chart, London Security ranks #295 out of 549 companies in the Business Services industry, which is below the industry midpoint. Overall, London Security has a GF Score™ of 75/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does London Security's Shiller PE Ratio compare to ALLE and MSA?
According to the Business Services industry distribution chart, London Security ranks #295 out of 549 companies for Shiller PE Ratio. This places London Security in the lower half of its industry. The industry median Shiller PE Ratio is 18.86. London Security's value of 20.17 is 6.9% above this benchmark. Historically, London Security's own Shiller PE Ratio has ranged from 12.71 to 27.14 over the past decade. While the company's 10-year median is 18.35 vs. the industry median of 18.86, London Security has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shiller PE Ratio for a Business Services company?
The median Shiller PE Ratio among Business Services companies is 18.86, based on 549 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. London Security's current Shiller PE Ratio of 20.17 is 6.9% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on London Security and its competitors. For the Business Services industry, the median Shiller PE Ratio is 18.86 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. London Security's current Shiller PE Ratio is 20.17, which is 10% above median its own 10-year median of 18.35. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is London Security stock overvalued right now?
Based on GuruFocus' analysis, London Security (LSE:LSC) is currently considered Fairly Valued. The stock's GF Value™ is £39.81, compared to a current price of £36.50 — trading 8.3% below its estimated fair value. The current Shiller PE Ratio is 20.17, which is 10% above median its 10-year median of 18.35 and 6.9% above the Business Services industry median of 18.86. London Security's overall GF Score™ is 75/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For London Security (LSE:LSC), the current Shiller PE Ratio is 20.17 as of Sep. 11, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is London Security (LSE:LSC) Overvalued in 2026?
Based on GuruFocus' analysis, London Security stock appears to be undervalued.
The current stock price of £36.50 is trading 8.3% below its estimated GF Value™ of £39.81.
GuruFocus considers London Security to be Fairly Valued.
Key valuation signals for LSE:LSC:
Shiller PE Ratio: 20.17 (10% above median its 10-year median of 18.35)
GF Value™: £39.81 vs. price of £36.50 (8.3% below fair value)
Industry Position: 6.9% above the Business Services median (#295 of 549)
No single metric tells the full story. See the LSE:LSC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
London Security PLC is an investment holding company that provides fire protection services and products. The business activity of the group functions through the United Kingdom, Belgium, the Netherlands, Austria, and the Rest of Europe. It derives revenue from the Outright sale of equipment, Maintenance, service, installation, and Equipment rental activity. The company's products are marketed under the Nu-Swift, Ansul, Total, and Master brands. The group operates in a single segment, which is the provision and maintenance of fire protection and security equipment in Europe.
75GF Score
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