How much does High Voltage Systems and Services Limited make?

High Voltage Systems and Services Limited reported revenue of £48.3m and £5m profit in the year to 31 Mar 2025, according to its accounts filed at Companies House.

How many employees does High Voltage Systems and Services Limited have?

High Voltage Systems and Services Limited reported an average of 98 employees in the year to 31 Mar 2025.

Is High Voltage Systems and Services Limited profitable?

Yes — High Voltage Systems and Services Limited reported a profit of £5m in the year to 31 Mar 2025.

Company No. 07413253 · Incorporated 20 Oct 2010

High Voltage Systems and Services Limited

Registered name: HIGH VOLTAGE SYSTEMS AND SERVICES LIMITED

Part of HVSS Group Limited group

High Voltage Systems and Services Limited made £48.3m revenue and £5m profit in the year to 31 Mar 2025.

High Voltage Systems and Services Limited’s revenue grew 31% to £48.3m in the year to 31 Mar 2025, with £5m profit and 98 employees. The company is classified under “construction of utility projects for fluids” and is based in Kettering; we hold 4 years of its filed accounts.

Full P&L filedSection F · ConstructionSIC 42210Construction of utility projects for fluids SIC 42220Construction of utility projects for electricity and telecommunications SIC 43210Electrical installation SIC 71122Engineering related scientific and technical consulting activities

Status: Active
Location: Kettering, East Midlands
Age: 15 yrs · since 2010
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 Mar 2025

Key figures

Capital-light

Revenue

£48.3m

Growth ▲31.2%

Profit

£5m

Growth ▲19.3%

Profit margin

10.3%

Gross 20.7%

Employees

Change ▲12.6%

Profit / employee

£50.7k

Revenue/employee £492k

Profitable streak

4yrs

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	Full P&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£23.4m	£35.8m	£36.8m	£48.3m
Cost of sales	£17m	£28.4m	£28.3m	£38.3m
Gross profit	£6.4m	£7.4m	£8.5m	£10m
Operating profit	£5m	£5.2m	£5.6m	£6.6m
Profit before tax	£5m	£5.2m	£5.6m	£6.7m
Profit after tax	£4.1m	£4.2m	£4.2m	£5m
Profit (best available)	£4.1m	£4.2m	£4.2m	£5m
Staff costs	£2.7m	£4.3m	£5.4m	£6.5m
Employees (average)	58	76	87	98
Ratios
Profit margin	17.3%	11.8%	11.3%	10.3%
Gross margin	27.5%	20.8%	23.1%	20.7%
Revenue per employee	£403k	£472k	£423k	£492k
Profit per employee	£69.9k	£55.5k	£47.9k	£50.7k
Growth (year on year)
Revenue growth	—	▲53.3%	▲2.6%	▲31.2%
Profit growth	—	▲4%	▼1.2%	▲19.3%
Headcount growth	—	▲31%	▲14.5%	▲12.6%
Balance sheet — indirect signals, not revenue
Cash at bank	£10.7m	£3.6m	£6m	£2.7m
Net assets	£2.3m	£6.5m	£8.7m	£9.7m
Fixed assets	£368k	£821k	£953k	£1.2m
Current assets	£22.4m	£29.6m	£25.6m	£33.3m
Debtors	£5.1m	£4.7m	£5m	£6m
Deferred income	£42.1k	£57.3k	£78.2k	£415k
Source	Accounts · bulk data Dec 2023	Accounts · bulk data Dec 2023	FullAccounts · bulk data Jul 2024	FullAccounts · bulk data Dec 2025

Derived from the latest filing

How the business works

Profit margin: 10.3%; Profit ÷ revenue.
Gross margin: 20.7%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £492k; Revenue ÷ average employees.
Profit per employee: £50.7k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 2.5%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 0.9%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 12.4%; 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: ▲11%; Now £9.7m
Cash at bank: ▼56%; Now £2.7m
Headcount: ▲13%; Now 98
Deferred income: ▲431%; Now £415k
Fixed assets: ▲26%; Now £1.2m

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

HVSS Group Limitedultimate parent75–100%
High Voltage Systems and Services Limitedthis company

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

Subsidiaries (1)

D P Cable Jointing LimitedFigures not disclosed

Sister companies (3)

CMS Networx LtdRev. £0 · Profit £0
Am Electrics (Renewables) LimitedFigures not disclosed
CMS Kettering LtdFigures not disclosed

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 £5m), from the Companies House accounts bulk data published Dec 2025. Spotted an error? Request a correction.

Updated from Companies House on 14 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.