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Company No. 05158885 · Incorporated 21 Jun 2004

Sirius Civil Engineering Limited

Registered name: SIRIUS CIVIL ENGINEERING LIMITED

Part of Sirius Eot Limited group

Sirius Civil Engineering Limited made £29.1m revenue and £728k profit in the year to 31 Dec 2025.

Sirius Civil Engineering Limited’s revenue grew 47% to £29.1m in the year to 31 Dec 2025, with £728k profit and 43 employees. The company is classified under “construction of other civil engineering projects” and is based in Langley Moor; we hold 4 years of its filed accounts.

Full P&L filedSection F · ConstructionSIC 42990Construction of other civil engineering projects n.e.c.
Status
Active
Location
Langley Moor, North East
Age
22 yrs · since 2004
Type
Private Limited Company

Part of a group. The filing indicates this company sits within a group structure, so its results may depend on intra-group trading and it may be hard to replicate independently.

Latest accounts · year to 31 Dec 2025

Key figures

Capital-light
Revenue
£29.1m
Growth ▲46.9%
Profit
£728k
Growth ▼5%
Profit margin
2.5%
Gross 11.8%
Employees
43
Change ▲19.4%
Profit / employee
£16.9k
Revenue/employee £677k
Profitable streak
3yrs
Consecutive profitable years in our data

Badges are automated estimates derived from the filed figures — not statements of fact about the company.

4 filed years

Financial history

Multi-year financials, oldest to newest
Year to31 Dec 202231 Dec 202331 Dec 202431 Dec 2025
DisclosureFull P&LFull P&LFull P&LFull P&L
Profit & loss
Revenue (turnover)£31.9m£18.5m£19.8m£29.1m
Cost of sales£29.8m£16.3m£17.2m£25.6m
Gross profit£2.1m£2.2m£2.6m£3.4m
Operating profit−£521k£145k£548k£989k
Profit before tax−£549k£87.9k£517k£969k
Profit after tax−£549k£87.6k£767k£728k
Profit (best available)−£549k£87.6k£767k£728k
Staff costs£2.5m£2.2m£2.2m£2.7m
Employees (average)44413643
Ratios
Profit margin−1.7%0.5%3.9%2.5%
Gross margin6.7%12.1%13%11.8%
Revenue per employee£726k£452k£550k£677k
Profit per employee−£12.5k£2.1k£21.3k£16.9k
Growth (year on year)
Revenue growth—▼42%▲7%▲46.9%
Profit growth——▲775.1%▼5%
Headcount growth—▼6.8%▼12.2%▲19.4%
Balance sheet — indirect signals, not revenue
Cash at bank£671k£1.3m£1.3m£3.1m
Net assets£1.7m£1.7m£2.5m£3.2m
Fixed assets—£0£10.7k£27.3k
Current assets£7.5m£6.7m£7.4m£10.1m
Debtors£16.3k£101k£0£107k
Deferred income£294k£426k£292k£336k
SourceFullAccounts · bulk data Sep 2024FullAccounts · bulk data Sep 2024FullAccounts · bulk data Sep 2025FullAccounts · bulk data Aug 2026
Derived from the latest filing

How the business works

Profit margin
2.5%
Profit ÷ revenue.
Gross margin
11.8%
Gross profit ÷ revenue. High for software and services.
Revenue per employee
£677k
Revenue ÷ average employees.
Profit per employee
£16.9k
Profit ÷ average employees.
Cash conversion
—
Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue
0.1%
Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue
1.2%
Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue
0.4%
Money owed by customers. Low = customers pay quickly.
Indirect — not revenue

Balance-sheet signals

Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.

Net assets
▲29%
Now £3.2m
Cash at bank
▲136%
Now £3.1m
Headcount
▲19%
Now 43
Deferred income
▲15%
Now £336k
Fixed assets
▲156%
Now £27.3k

Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.

Corporate ownership

Group structure

Ownership chain

  1. Sirius Eot Limitedultimate parent75–100%
  2. Sirius Engineering Group Ltd75–100%
  3. Sirius Civil Engineering Limitedthis company

Bands show the share of ownership each company holds in the one below it.

Sister companies (8)

From the Persons with Significant Control register (corporate controllers only).

Same industry, similar size

Similar profitable businesses

Industry benchmarks →

Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Dec 2025 (profit £728k), from the Companies House accounts bulk data published Aug 2026. Spotted an error? Request a correction.

Updated from Companies House on 23 Oct 2026

Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.