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Company No. 14502440 · Incorporated 23 Nov 2022

Ironstone Energy Limited

Registered name: IRONSTONE ENERGY LIMITED

Part of 3i Infrastructure Plc group

Ironstone Energy Limited made £0 revenue and a £28k loss in the year to 31 Mar 2024.

Ironstone Energy Limited’s revenue was £0 in the year to 31 Mar 2024, with a loss of £28k and 0 employees. The company is classified under “production of electricity” and is based in Guildford.

Full P&L filedSection D · Electricity, gas, steam and air conditioning supplySIC 35110Production of electricitySIC 35210Manufacture of gas
Status
Active
Location
Guildford, South East
Age
3 yrs · since 2022
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 2024

Key figures

Small team
Revenue
£0
Growth —
Profit
−£28k
Growth —
Profit margin
—
 
Employees
0
Change —
Profit / employee
—
 
Profitable streak
0yrs
Consecutive profitable years in our data

Badges are automated estimates derived from the filed figures — not statements of fact about the company.

1 filed year

Financial history

Multi-year financials, oldest to newest
Year to31 Mar 2024
DisclosureFull P&L
Profit & loss
Revenue (turnover)£0
Cost of sales£0
Gross profit£0
Operating profit£0
Profit before tax−£28k
Profit after tax−£28k
Profit (best available)−£28k
Employees (average)0
Ratios
Profit margin—
Balance sheet — indirect signals, not revenue
Cash at bank£7.6k
Net assets−£28k
Current assets£501k
Debtors£493k
SourceFullAccounts · bulk data Aug 2024
Derived from the latest filing

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
—
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.
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
—
Now −£28k
Cash at bank
—
Now £7.6k
Headcount
—
Now 0
Deferred income
—
Now —
Fixed assets
—
Now —
Corporate ownership

Group structure

Ownership chain

  1. 3i Infrastructure Plc (registered outside the UK register)ultimate parent75–100%
  2. Green Gas Holdco 1 Limited75–100%
  3. Green Gas Holdco 2 Limited75–100%
  4. Future Biogas Holdco Limited75–100%
  5. Future Biogas Midco Limited75–100%
  6. Future Biogas Bidco Limited75–100%
  7. Future Biogas Group Limited75–100%
  8. Future Biogas Limited75–100%
  9. Ironstone Energy Limitedthis company

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

Sister companies (13)

From the Persons with Significant Control register (corporate controllers only).

Same industry, similar size

Similar profitable businesses

Industry benchmarks →

Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Mar 2024 (profit −£28k), from the Companies House accounts bulk data published Aug 2024. Spotted an error? Request a correction.

Updated from Companies House on 15 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.