How much does Magnetic Shields Limited make?

Magnetic Shields Limited reported revenue of £15m and £215k profit in the year to 30 Jun 2025, according to its accounts filed at Companies House.

How many employees does Magnetic Shields Limited have?

Magnetic Shields Limited reported an average of 86 employees in the year to 30 Jun 2025.

Is Magnetic Shields Limited profitable?

Yes — Magnetic Shields Limited reported a profit of £215k in the year to 30 Jun 2025.

Company No. 00581158 · Incorporated 29 Mar 1957

Magnetic Shields Limited

Registered name: MAGNETIC SHIELDS LIMITED

Part of Colsur Materials Limited group

Magnetic Shields Limited made £15m revenue and £215k profit in the year to 30 Jun 2025.

Magnetic Shields Limited’s revenue grew 26% to £15m in the year to 30 Jun 2025, with £215k profit and 86 employees. The company is classified under “other non-ferrous metal production” and is based in Staplehurst; we hold 4 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 24450Other non-ferrous metal production

Status: Active
Location: Staplehurst, South East
Age: 69 yrs · since 1957
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 30 Jun 2025

Key figures

Operating leverageDoing more with lessCash flow filed

Revenue

£15m

Growth ▲25.6%

Profit

£215k

Growth ▲260.6%

Profit margin

1.4%

Gross 34.9%

Employees

Change ▼2.3%

Profit / employee

£2.5k

Revenue/employee £175k

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	30 Jun 2022	30 Jun 2023	30 Jun 2024	30 Jun 2025
Disclosure	Full P&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£10.8m	£10.8m	£12m	£15m
Cost of sales	£7m	£6.5m	£7.4m	£9.8m
Gross profit	£3.8m	£4.3m	£4.5m	£5.2m
Operating profit	£314k	£298k	£122k	£698k
Profit before tax	£255k	£213k	−£111k	£497k
Profit after tax	£242k	£214k	£59.6k	£215k
Profit (best available)	£242k	£214k	£59.6k	£215k
Staff costs	£3.2m	£3.4m	£3.5m	£3.9m
Employees (average)	82	91	88	86
Ratios
Profit margin	2.2%	2%	0.5%	1.4%
Gross margin	35.3%	40.2%	38%	34.9%
Revenue per employee	£132k	£119k	£136k	£175k
Profit per employee	£3k	£2.4k	£678	£2.5k
Cash conversion	−375.3%	84.9%	−847.3%	−204.5%
Growth (year on year)
Revenue growth	—	▼0.1%	▲10.8%	▲25.6%
Profit growth	—	▼11.6%	▼72.2%	▲260.6%
Headcount growth	—	▲11%	▼3.3%	▼2.3%
Balance sheet — indirect signals, not revenue
Cash at bank	£1.3m	£1.1m	£1.3m	£1.1m
Net assets	£4.3m	£4.5m	£4.6m	£4.8m
Fixed assets	£4.8m	£4.9m	£4.5m	£4.9m
Current assets	£5.9m	£7.3m	£8m	£6.2m
Debtors	£1.3m	£1.6m	£1.6m	£1.8m
Deferred income	£288k	£346k	£344k	£1.1m
Cash from operations	−£1.2m	£253k	−£1m	−£1.4m
Source	FullAccounts · bulk data Feb 2024	FullAccounts · bulk data Feb 2024	FullAccounts · bulk data Feb 2025	FullAccounts · bulk data Feb 2026

Derived from the latest filing

How the business works

Profit margin: 1.4%; Profit ÷ revenue.
Gross margin: 34.9%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £175k; Revenue ÷ average employees.
Profit per employee: £2.5k; Profit ÷ average employees.
Cash conversion: −204.5%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 32.5%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 7.4%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 11.8%; 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: ▲5%; Now £4.8m
Cash at bank: ▼16%; Now £1.1m
Headcount: ▼2%; Now 86
Deferred income: ▲224%; Now £1.1m
Fixed assets: ▲8%; Now £4.9m

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

Colsur Materials Limitedultimate parent75–100%
BKT Group Holdings Limited75–100%
Magnetic Shields Limitedthis company

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

Subsidiaries (2)

MSL Heat Treatment LimitedFigures not disclosed
MSL Precision LimitedFigures 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 30 Jun 2025 (profit £215k), from the Companies House accounts bulk data published Feb 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.