Amt-Sybex Limited
Registered name: AMT-SYBEX LIMITED
Part of Constellation Software UK Holdco Ltd groupAmt-Sybex Limited made £18.3m revenue and a £7.6m loss in the year to 31 Dec 2025.
Amt-Sybex Limited’s revenue fell 8% to £18.3m in the year to 31 Dec 2025, with a loss of £7.6m and 125 employees. The company is classified under “business and domestic software development” and is based in Wallingford; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- Wallingford
- Age
- 31 yrs · since 1995
- Type
- Private Limited Company
Key figures
Financial history
| Year to | 31 Dec 2023 | 31 Dec 2024 | 31 Dec 2025 |
|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L |
| Profit & loss | |||
| Revenue (turnover) | £20.6m | £19.9m | £18.3m |
| Cost of sales | −£6.6m | −£6.7m | −£5.2m |
| Gross profit | £14m | £13.3m | £13.1m |
| Operating profit | £1.9m | −£2m | −£288k |
| Profit before tax | £1.2m | −£2.8m | −£908k |
| Profit after tax | £1.1m | −£2.8m | −£7.6m |
| Profit (best available) | £1.1m | −£2.8m | −£7.6m |
| Employees (average) | 118 | 130 | 125 |
| Ratios | |||
| Profit margin | 5.1% | −14.2% | −41.4% |
| Gross margin | 68% | 66.5% | 71.7% |
| Revenue per employee | £175k | £153k | £147k |
| Profit per employee | £8.9k | −£21.8k | −£60.7k |
| Growth (year on year) | |||
| Revenue growth | — | ▼3.2% | ▼8.1% |
| Profit growth | — | ▼368.1% | — |
| Headcount growth | — | ▲10.2% | ▼3.9% |
| Balance sheet — indirect signals, not revenue | |||
| Net assets | — | — | — |
| Source | Accounts · bulk data Aug 2025 | Accounts · bulk data Aug 2025 | Accounts · bulk data Sep 2026 |
How the business works
- Profit margin
- −41.4%
- Profit ÷ revenue.
- Gross margin
- 71.7%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £147k
- Revenue ÷ average employees.
- Profit per employee
- −£60.7k
- 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
- —
- Now —
- Cash at bank
- —
- Now —
- Headcount
- ▼4%
- Now 125
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- Constellation Software UK Holdco Ltdultimate parent75–100%
- Jonas Computing (UK) Limited75–100%
- Amt-Sybex Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (21)
- London & Zurich LimitedRev. £4.2m · Profit £187k
- Blayhall Marine LimitedFigures not disclosed
- Bluestar Software LimitedFigures not disclosed
- Delineate Strategy LimitedFigures not disclosed
- Evercommerce UK Company LimitedFigures not disclosed
- Ez-Runner Systems LimitedFigures not disclosed
- Fitronics LimitedFigures not disclosed
- Hopewiser Holding Group LimitedFigures not disclosed
- Intelligent Counting LimitedFigures not disclosed
- Jonas Lifestyle LimitedFigures not disclosed
- Kahootz LimitedFigures not disclosed
- Metalogic Holdings LimitedFigures not disclosed
- Power2sms LimitedFigures not disclosed
- Rbro Solutions-UK LimitedFigures not disclosed
- Rock Solid Knowledge LtdFigures not disclosed
- Salon Software Solutions LimitedFigures not disclosed
- Seiki Systems LimitedRev. — · Profit −£12.3k
- The Hessel Group LimitedRev. — · Profit £50k
- Webcreative UK LimitedFigures not disclosed
- Wheatley Associates Holdings LimitedFigures not disclosed
- XN Leisure Systems LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from accounts for the year to 31 Dec 2025 (profit −£7.6m), from the Companies House accounts bulk data published Sep 2026. Spotted an error? Request a correction.
Updated from Companies House on 16 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.