How much does Diamond Air Conditioning Limited make?

Diamond Air Conditioning Limited reported revenue of £4.2m and £1m profit in the year to 31 May 2025, according to its accounts filed at Companies House.

How many employees does Diamond Air Conditioning Limited have?

Diamond Air Conditioning Limited reported an average of 21 employees in the year to 31 May 2025.

Is Diamond Air Conditioning Limited profitable?

Yes — Diamond Air Conditioning Limited reported a profit of £1m in the year to 31 May 2025.

Company No. SC323484 · Incorporated 11 May 2007

Diamond Air Conditioning Limited

Registered name: DIAMOND AIR CONDITIONING LIMITED

Part of Sescom Ltd group

Diamond Air Conditioning Limited made £4.2m revenue and £1m profit in the year to 31 May 2025.

Diamond Air Conditioning Limited’s revenue grew 28% to £4.2m in the year to 31 May 2025, with £1m profit and 21 employees. The company is classified under “plumbing, heat and air-conditioning installation” and is based in Coatbridge; we hold 4 years of its filed accounts.

Full P&L filedSection F · ConstructionSIC 43220Plumbing, heat and air-conditioning installation

Status: Active
Location: Coatbridge, Scotland
Age: 19 yrs · since 2007
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 May 2025

Key figures

Capital-lightOperating leverageBoring industry

Revenue

£4.2m

Growth ▲27.5%

Profit

£1m

Growth ▲41.6%

Profit margin

24.2%

Gross 70.3%

Employees

Change ▲5%

Profit / employee

£48.5k

Revenue/employee £200k

Profitable streak

2yrs

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 May 2022	31 May 2023	31 May 2024	31 May 2025
Disclosure	No P&L	No P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	—	—	£3.3m	£4.2m
Cost of sales	—	—	£1.2m	£1.2m
Gross profit	—	—	£2.1m	£3m
Operating profit	—	—	£973k	£1.3m
Profit before tax	—	—	£979k	£1.3m
Profit after tax	—	—	£719k	£1m
Profit (best available)	—	—	£719k	£1m
Employees (average)	21	23	20	21
Ratios
Profit margin	—	—	21.8%	24.2%
Gross margin	—	—	63.5%	70.3%
Revenue per employee	—	—	£165k	£200k
Profit per employee	—	—	£35.9k	£48.5k
Growth (year on year)
Revenue growth	—	—	—	▲27.5%
Profit growth	—	—	—	▲41.6%
Headcount growth	—	▲9.5%	▼13%	▲5%
Balance sheet — indirect signals, not revenue
Cash at bank	£1.3m	£1.3m	£1.4m	£777k
Net assets	£1.5m	£1.7m	£2m	£658k
Fixed assets	£348k	£481k	£463k	£138k
Current assets	£1.6m	£1.7m	£1.9m	£1.2m
Debtors	£171k	£184k	£157k	£229k
Source	FullAccounts · bulk data Feb 2024	FullAccounts · bulk data Feb 2024	FullAccounts · bulk data Dec 2024	FullAccounts · bulk data Jan 2026

Derived from the latest filing

How the business works

Profit margin: 24.2%; Profit ÷ revenue.
Gross margin: 70.3%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £200k; Revenue ÷ average employees.
Profit per employee: £48.5k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 3.3%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: —; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 5.5%; 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: ▼67%; Now £658k
Cash at bank: ▼45%; Now £777k
Headcount: ▲5%; Now 21
Deferred income: —; Now —
Fixed assets: ▼70%; Now £138k

Corporate ownership

Group structure

Ownership chain

Sescom Ltdultimate parent75–100%
PCB Technical Solutions Limited75–100%
Diamond Air Conditioning Limitedthis company

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

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 May 2025 (profit £1m), from the Companies House accounts bulk data published Jan 2026. 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.