- Companies
- Machinery repair and installation
- Northwood
- 21ST Century Electrical Ltd
21ST Century Electrical Ltd
- Company number
- 09224238
- Incorporated
- 18 Sep 201412 years trading
- Registered office
- 27A Green Lane, Northwood, Middlesex, HA6 2PX
- Nature of business
- Repair of electrical equipment; Development of building projects
21ST Century Electrical Ltd is a 12-year-old private limited company registered in Northwood, company number 09224238, one of 9 machinery repair and installation companies in Northwood. Its next accounts are due at Companies House on 25 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for 21ST Century Electrical LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £5,563 (-3.3%) on the year before, to £161K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £201K against £55K owed within a year: 3.7 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £161K | £44K | £201K | £55K | 3 |
| 31 Dec 2023 | £167K | £15K | £187K | £46K | 3 |
| 31 Dec 2022 | £182K | £11K | £192K | £44K | 3 |
| 31 Dec 2021 | £221K | £131K | £262K | £87K | 3 |
| 31 Dec 2020 | £264K | £297K | £438K | £213K | 3 |
| 31 Dec 2019 | £147K | £16K | £285K | £138K | |
| 31 Dec 2018 | -£145K | -£214K | £71K | ||
| 31 Dec 2017 | -£138K | -£299K | £168K | ||
| 31 Dec 2016 | -£97K | -£309K | £223K | ||
| 31 Dec 2015 | £54K | £47K | £252K | £218K |
Where 21ST Century Electrical Ltd is registered
The registered office is in Northwood (HA6), in the Hillingdon local authority area, London. Show HA6 2PX on a map.
Other trade companies in HA6
- Alexastef LimitedBuilders
- Brill (Rural Property) LimitedProperty developers
- Roblar LimitedBuilders
- Compare My Cleaning Quotes LtdCleaning companies
- Cheshire Developments Group LtdProperty developers
- Elite London Cleaning LtdCleaning companies
- Melylar Render LtdBuilders
- Avidity Air Conditioning LtdPlumbers and heating engineers
Also registered at this address
6 other companies use the same registered office as 21ST Century Electrical Ltd.
- Am/PM Property Services Ltd.Plumbers and heating engineers
- Concrete Aqua Guard (UK) LtdSpecialist contractors
- Pat Watt Electricals LimitedElectricians
- Second Jacobsen's Estate Management Company LimitedProperty developers
- Stephen and Cavalli LtdSpecialist contractors
- Valmi Design LtdRepair services
What happens if 21ST Century Electrical Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 25 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Dec 2026 to 25 Jan 2027 | £150 |
| 1 to 3 months late | 26 Jan 2027 to 25 Mar 2027 | £375 |
| 3 to 6 months late | 26 Mar 2027 to 25 Jun 2027 | £750 |
| More than 6 months late | From 26 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 26 Mar 2027 | £200 |
| 3 months late | 25 Jun 2027 | another £200 |
| 6 months late | 25 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 25 Mar 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 09224238
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 September 2014 (12 years ago)
- Registered office
- 27A Green Lane, Northwood, Middlesex, HA6 2PX
- Nature of business
- Repair of electrical equipment (SIC 33140)
Development of building projects (SIC 41100) - Year end
- 26 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 18 September 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Northwood
Other active machinery repair and installation companies registered in Northwood.
- A A Electrical Services Limited2017
- Aquaswim Services Limited2007
- Elite Property Services and Security Ltd2026
- Gamaway Limited1992
- Kingfisher White Services Limited2008
- Luckey Services Ltd2020
- MDH Investments Limited2001
- Silvio's Construction Ltd2024
All machinery repair and installation companies in Northwood · All trades in Northwood · Machinery repair and installation across the UK
Frequently asked questions
When are 21ST Century Electrical Ltd's accounts due?
21ST Century Electrical Ltd's next accounts are due at Companies House by 25 December 2026 (in 73 days), covering the period to 25 March 2026.
When is 21ST Century Electrical Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 25 March 2026, due by 25 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is 21ST Century Electrical Ltd still trading?
21ST Century Electrical Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does 21ST Century Electrical Ltd do?
21ST Century Electrical Ltd is registered under Repair of electrical equipment (SIC 33140); Development of building projects (SIC 41100).
How old is 21ST Century Electrical Ltd?
21ST Century Electrical Ltd was incorporated on 18 September 2014, 12 years ago.
What is the penalty if 21ST Century Electrical Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View 21ST Century Electrical Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.