How much does Carbon Rewind Ltd make?

Carbon Rewind Ltd reported revenue of £12.6m and £39.8k profit in the year to 31 Mar 2025, according to its accounts filed at Companies House.

How many employees does Carbon Rewind Ltd have?

Carbon Rewind Ltd reported an average of 1 employee in the year to 31 Mar 2025.

Is Carbon Rewind Ltd profitable?

Yes — Carbon Rewind Ltd reported a profit of £39.8k in the year to 31 Mar 2025.

Company No. 11926768 · Incorporated 4 Apr 2019

Carbon Rewind Ltd

Registered name: CARBON REWIND LTD

Part of Carbon Rewind Holdings Limited group

Carbon Rewind Ltd made £12.6m revenue and £39.8k profit in the year to 31 Mar 2025.

Carbon Rewind Ltd’s revenue grew 11% to £12.6m in the year to 31 Mar 2025, with £39.8k profit and 1 employee. The company is classified under “plumbing, heat and air-conditioning installation” and is based in Watford; we hold 4 years of its filed accounts.

Full P&L filedSection F · ConstructionSIC 43220Plumbing, heat and air-conditioning installation SIC 43290Other construction installation

Status: Active
Location: Watford, East of England
Age: 7 yrs · since 2019
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.

Latest accounts · year to 31 Mar 2025

Key figures

Small teamCapital-lightDoing more with lessBoring industryCash flow filed

Revenue

£12.6m

Growth ▲11.4%

Profit

£39.8k

Growth ▼34.1%

Profit margin

0.3%

Gross 34.3%

Employees

Change ▼98.4%

Profit / employee

£39.8k

Revenue/employee £12.6m

Profitable streak

3yrs

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	31 Mar 2022	31 Mar 2023	31 Mar 2024	31 Mar 2025
Disclosure	No P&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	—	£13.4m	£11.3m	£12.6m
Cost of sales	—	£8.3m	£6.9m	£8.3m
Gross profit	—	£5m	£4.5m	£4.3m
Operating profit	—	£2.7m	£137k	£116k
Profit before tax	—	£2.7m	£102k	£68.7k
Profit after tax	—	£2.3m	£60.5k	£39.8k
Profit (best available)	—	£2.3m	£60.5k	£39.8k
Staff costs	—	£1.3m	£3.3m	£2.9m
Employees (average)	33	46	61	1
Ratios
Profit margin	—	17.5%	0.5%	0.3%
Gross margin	—	37.7%	39.4%	34.3%
Revenue per employee	—	£290k	£186k	£12.6m
Profit per employee	—	£50.8k	£992	£39.8k
Cash conversion	—	−48.5%	−1615%	355%
Growth (year on year)
Revenue growth	—	—	▼15.2%	▲11.4%
Profit growth	—	—	▼97.4%	▼34.1%
Headcount growth	—	▲39.4%	▲32.6%	▼98.4%
Balance sheet — indirect signals, not revenue
Cash at bank	£57.2k	£637k	£442k	£242k
Net assets	£183k	£2.1m	£382k	£422k
Fixed assets	£147k	£537k	£504k	£428k
Current assets	£539k	£3.3m	£1.7m	£2.1m
Debtors	£152k	£1.7m	£326k	£262k
Deferred income	—	£75.1k	£555k	£604k
Cash from operations	—	−£1.3m	−£2.2m	£413k
Source	FilletedAccounts · bulk data Oct 2023	FilletedAccounts · bulk data Oct 2023	FullAccounts · bulk data Mar 2025	FullAccounts · bulk data Dec 2025

Derived from the latest filing

How the business works

Profit margin: 0.3%; Profit ÷ revenue.
Gross margin: 34.3%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £12.6m; Revenue ÷ average employees.
Profit per employee: £39.8k; Profit ÷ average employees.
Cash conversion: 355%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 3.4%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 4.8%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 2.1%; 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: ▲10%; Now £422k
Cash at bank: ▼45%; Now £242k
Headcount: ▼98%; Now 1
Deferred income: ▲9%; Now £604k
Fixed assets: ▼15%; Now £428k

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

Carbon Rewind Holdings Limitedultimate parent75–100%
Carbon Rewind Ltdthis company

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

Sister companies (2)

Carbon Rewind Insulation LtdFigures not disclosed
Carbon Rewind Renewables LtdFigures not disclosed

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

Same industry, similar size

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Mar 2025 (profit £39.8k), from the Companies House accounts bulk data published Dec 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.