London Diamond Drilling Holdings Ltd
Registered name: LONDON DIAMOND DRILLING HOLDINGS LTD
Part of LDD Holdings Limited groupLondon Diamond Drilling Holdings Ltd made £60.2m revenue and £3.8m profit in the year to 30 Jun 2025. read from filing text
London Diamond Drilling Holdings Ltd’s revenue grew 26% to £60.2m in the year to 30 Jun 2025, with £3.8m profit and 134 employees. The company is classified under “activities of other holding companies” and is based in Woodford Green; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Woodford Green, London
- Age
- 12 yrs · since 2014
- Type
- Private Limited Company
Pass-through vehicle. This looks like a holding, staffing or umbrella company. Its revenue and profit may largely pass through to or from other entities, so the figures may not reflect a standalone operating business. It is excluded from our opportunity lists.
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
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&Lread from filing text | Full P&Lread from filing text | Full P&Lread from filing text | Full P&Lread from filing text |
| Profit & loss | ||||
| Revenue (turnover) | £25.2m | £25.8m | £48m | £60.2m |
| Cost of sales | £19.3m | £20.8m | £38.2m | £46.4m |
| Gross profit | £5.8m | £5m | £9.7m | £13.8m |
| Operating profit | £639k | £686k | £2.7m | £5.7m |
| Profit before tax | £958k | £340k | £2.6m | £5.3m |
| Profit after tax | £909k | £176k | £1.9m | £3.8m |
| Profit (best available) | £909k | £176k | £1.9m | £3.8m |
| Employees (average) | 138 | 153 | 118 | 134 |
| Ratios | ||||
| Profit margin | 3.6% | 0.7% | 4% | 6.3% |
| Gross margin | 23.2% | 19.3% | 20.3% | 22.9% |
| Revenue per employee | £182k | £169k | £406k | £449k |
| Profit per employee | £6.6k | £1.2k | £16.4k | £28.1k |
| Growth (year on year) | ||||
| Revenue growth | — | ▲2.6% | ▲85.8% | ▲25.5% |
| Profit growth | — | ▼80.6% | ▲1000% | ▲93.8% |
| Headcount growth | — | ▲10.9% | ▼22.9% | ▲13.6% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £119 | £119 | £119 | £119 |
| Net assets | −£2.4m | −£2.4m | −£2.4m | −£2.4m |
| Fixed assets | £1k | £1k | £1k | £2k |
| Current assets | £4.4m | £4.1m | £3.3m | £2m |
| Debtors | £0 | £0 | £0 | £0 |
| Source | FullAccounts · bulk data Mar 2024 | FullAccounts · bulk data Mar 2024 | FullAccounts · bulk data Mar 2025 | FullAccounts · bulk data Nov 2025 |
How the business works
- Profit margin
- 6.3%
- Profit ÷ revenue.
- Gross margin
- 22.9%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £449k
- Revenue ÷ average employees.
- Profit per employee
- £28.1k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 0%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 0%
- 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 −£2.4m
- Cash at bank
- 0%
- Now £119
- Headcount
- ▲14%
- Now 134
- Deferred income
- —
- Now —
- Fixed assets
- ▲100%
- Now £2k
Group structure
Ownership chain
- LDD Holdings Limitedultimate parent75–100%
- London Diamond Drilling Holdings Ltdthis company
Bands show the share of ownership each company holds in the one below it.
Subsidiaries (2)
- LDD Construction LimitedRev. £60.2m · Profit £3.7m
- LDD Fire Protection Ltd.Figures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from FullAccounts for the year to 30 Jun 2025 (profit £3.8m), from the Companies House accounts bulk data published Nov 2025. 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.