Adder Technology Limited
Registered name: ADDER TECHNOLOGY LIMITED
Part of Adder Trustees Limited groupAdder Technology Limited made £5.3m profit in the year to 30 Jun 2025 (revenue not disclosed).
Adder Technology Limited reported £5.3m profit in the year to 30 Jun 2025, up 19% on the year before; its revenue was not disclosed. It had 138 employees. The company is classified under “manufacture of computers and peripheral equipment” and is based in Leicester; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Leicester, East Midlands
- Age
- 42 yrs · since 1984
- 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.
Key figures
This company published its profit but not its turnover, so revenue and margins are not disclosed. We never estimate them.
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 30 Jun 2022 | 30 Jun 2023 | 30 Jun 2024 | 30 Jun 2025 |
|---|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Profit only | Profit only |
| Profit & loss | ||||
| Revenue (turnover) | £32.5m | £38.5m | — | — |
| Cost of sales | £9.9m | £14.5m | £8.3m | £10.7m |
| Gross profit | £22.6m | £24m | — | — |
| Operating profit | £7.6m | £4.7m | — | — |
| Profit before tax | £7.7m | £5m | £4.3m | £6.4m |
| Profit after tax | £7m | £5.4m | £4.5m | £5.3m |
| Profit (best available) | £7m | £5.4m | £4.5m | £5.3m |
| Staff costs | £9.5m | £10.6m | £10.3m | £10.1m |
| Employees (average) | 128 | 137 | 144 | 138 |
| Ratios | ||||
| Profit margin | 21.6% | 13.9% | — | — |
| Gross margin | 69.5% | 62.3% | — | — |
| Revenue per employee | £254k | £281k | — | — |
| Profit per employee | £54.9k | £39.1k | £31k | £38.3k |
| Cash conversion | −38.9% | 42.7% | — | — |
| Growth (year on year) | ||||
| Revenue growth | — | ▲18.3% | — | — |
| Profit growth | — | ▼23.8% | ▼16.7% | ▲18.6% |
| Headcount growth | — | ▲7% | ▲5.1% | ▼4.2% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £23.7m | £23.8m | £26.3m | £34.4m |
| Net assets | £42.1m | £45.6m | £48.3m | £53.6m |
| Fixed assets | £2.4m | £1.1m | £975k | £366k |
| Current assets | £44.6m | £48.9m | £49.9m | £56.1m |
| Debtors | £3.5m | £2.8m | £2.1m | £2.9m |
| Deferred income | £347k | £462k | £535k | £475k |
| Cash from operations | −£3m | £2m | −£4.1m | £9.7m |
| Source | Accounts · bulk data Mar 2024 | Accounts · bulk data Mar 2024 | FullAccounts · bulk data Mar 2025 | FullAccounts · bulk data Mar 2026 |
How the business works
- Profit margin
- —
- Profit ÷ revenue.
- Gross margin
- —
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- —
- Revenue ÷ average employees.
- Profit per employee
- £38.3k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- —
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- —
- Money owed by customers. Low = customers pay quickly.
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 £53.6m
- Cash at bank
- ▲31%
- Now £34.4m
- Headcount
- ▼4%
- Now 138
- Deferred income
- ▼11%
- Now £475k
- Fixed assets
- ▼62%
- Now £366k
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Group structure
Ownership chain
- Adder Trustees Limitedultimate parent50–75%
- Adder Technology Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Subsidiaries (1)
- Adventiq LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Similar profitable businesses
- Captec Group PLCFareham · Manufacture of computers and peripheral equipment
- Revenue
- £28m
- Profit
- £3.1m
- Staff
- 144
- Impulse Embedded LimitedNewcastle · Manufacture of computers and peripheral equipment
- Revenue
- £16.5m
- Profit
- £2.2m
- Staff
- 34
- Magicard LtdWeymouth · Manufacture of computers and peripheral equipment
- Revenue
- £19.8m
- Profit
- £1.6m
- Staff
- 68
- Tripleplay Services LimitedLondon · Manufacture of computers and peripheral equipment
- Revenue
- £21.9m
- Profit
- £1.5m
- Staff
- 99
- Daco Scientific LimitedAldermaston · Manufacture of computers and peripheral equipment
- Revenue
- £14.6m
- Profit
- £1.1m
- Staff
- 88
- Atmos International LimitedManchester · Manufacture of computers and peripheral equipment
- Revenue
- £14.4m
- Profit
- £983k
- Staff
- 92
Sources
Latest figures from FullAccounts for the year to 30 Jun 2025 (profit £5.3m), from the Companies House accounts bulk data published Mar 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.