How much does Boom Construction Limited make?

Boom Construction Limited reported revenue of £21.3m and £982k profit in the year to 31 Mar 2025, according to its accounts filed at Companies House.

How many employees does Boom Construction Limited have?

Boom Construction Limited reported an average of 21 employees in the year to 31 Mar 2025.

Is Boom Construction Limited profitable?

Yes — Boom Construction Limited reported a profit of £982k in the year to 31 Mar 2025.

Company No. 07989022 · Incorporated 13 Mar 2012

Boom Construction Limited

Registered name: BOOM CONSTRUCTION LIMITED

Boom Construction Limited made £21.3m revenue and £982k profit in the year to 31 Mar 2025.

Boom Construction Limited’s revenue fell 14% to £21.3m in the year to 31 Mar 2025, with £982k profit and 21 employees. The company is classified under “construction of commercial buildings” and is based in London; we hold 4 years of its filed accounts.

Full P&L filedSection F · ConstructionSIC 41201Construction of commercial buildings

Status: Active
Location: London, London
Age: 14 yrs · since 2012
Type: Private Limited Company

Latest accounts · year to 31 Mar 2025

Key figures

IndependentCapital-lightCash flow filed

Revenue

£21.3m

Growth ▼14.1%

Profit

£982k

Growth ▼19.1%

Profit margin

4.6%

Gross 11.2%

Employees

Change 0%

Profit / employee

£46.7k

Revenue/employee £1m

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 to	31 Mar 2022	31 Mar 2023	31 Mar 2024	31 Mar 2025
Disclosure	No P&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	—	£22.5m	£24.8m	£21.3m
Cost of sales	—	£21.1m	£22.5m	£18.9m
Gross profit	—	£1.4m	£2.3m	£2.4m
Operating profit	—	£768k	£1.3m	£1.1m
Profit before tax	—	£762k	£1.3m	£1.3m
Profit after tax	—	£714k	£1.2m	£982k
Profit (best available)	—	£714k	£1.2m	£982k
Staff costs	—	£975k	£1.3m	£1.9m
Employees (average)	13	21	21	21
Ratios
Profit margin	—	3.2%	4.9%	4.6%
Gross margin	—	6.3%	9.3%	11.2%
Revenue per employee	—	£1.1m	£1.2m	£1m
Profit per employee	—	£34k	£57.8k	£46.7k
Cash conversion	—	−161.9%	−33.9%	−423.1%
Growth (year on year)
Revenue growth	—	—	▲10.1%	▼14.1%
Profit growth	—	—	▲69.8%	▼19.1%
Headcount growth	—	▲61.5%	0%	0%
Balance sheet — indirect signals, not revenue
Cash at bank	£2.5m	£3.7m	£4.1m	£8.2m
Net assets	£2.4m	£3.1m	£4.3m	£4.9m
Fixed assets	£78.6k	£329k	£277k	£357k
Current assets	£3.7m	£6.3m	£10m	£13.2m
Debtors	£755k	£1.4m	£2m	£2.5m
Cash from operations	—	−£1.2m	−£438k	−£4.6m
Source	FullAccounts · bulk data Dec 2023	FullAccounts · bulk data Dec 2023	FullAccounts · bulk data Dec 2024	FullAccounts · bulk data Nov 2025

Derived from the latest filing

How the business works

Profit margin: 4.6%; Profit ÷ revenue.
Gross margin: 11.2%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £1m; Revenue ÷ average employees.
Profit per employee: £46.7k; Profit ÷ average employees.
Cash conversion: −423.1%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 1.7%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: —; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 11.7%; 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: ▲13%; Now £4.9m
Cash at bank: ▲99%; Now £8.2m
Headcount: 0%; Now 21
Deferred income: —; Now —
Fixed assets: ▲29%; Now £357k

Corporate ownership

Group structure

Minority corporate shareholders

Aldenham Residential Limited 25–50%

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

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Mar 2025 (profit £982k), from the Companies House accounts bulk data published Nov 2025. Spotted an error? Request a correction.

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