- Companies
- Installers
- London
- Longsword Building & Maintenance Services Ltd
Longsword Building & Maintenance Services Ltd
- Company number
- 10892030
- Incorporated
- 31 Jul 20179 years trading
- Registered office
- 318 Old Street, London, EC1V 9DR
- Nature of business
- Other construction installation; Other specialised construction activities n.e.c.; Agents involved in the sale of a variety of goods; Non-specialised wholesale trade
Longsword Building & Maintenance Services Ltd is a 9-year-old private limited company registered in London, company number 10892030, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 up £15K (+9.4%) on the year before, to £170K.
- Net assets rose in 7 of 7 year-on-year comparisons on record.
- Current assets of £381K against £264K owed within a year: 1.4 times cover.
- 19 employees on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £170K | £81K | £381K | £264K | 19 |
| 31 Mar 2024 | £155K | £124K | £505K | £102K | 19 |
| 31 Mar 2023 | £118K | £122K | £383K | £71K | 17 |
| 31 Mar 2022 | £74K | £16K | £147K | £51K | 17 |
| 31 Mar 2021 | £34K | £31K | £104K | £32K | 12 |
| 31 Mar 2020 | £12K | £23K | £21K | 4 | |
| 31 Mar 2019 | £6,735 | £11K | £4,059 | 1 | |
| 31 Mar 2018 | £4,324 | £8,338 | £4,014 |
Public contracts won
Longsword Building & Maintenance Services Ltd has one public sector contract award on record (2020). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| L&Q Construction | London and Quadrant Housing Trust - Multitrade Framework 2020-2024 - AWARD | Ceiling, not shown | 10 Feb 2020 |
Where Longsword Building & Maintenance Services Ltd is registered
The registered office is in London (EC1V), in the Hackney local authority area, London. Show EC1V 9DR on a map.
Other trade companies in EC1V
- Cardiff Electrical Solutions LtdElectricians
- Edemis Construction LtdBuilders
- Zaylan LtdProperty developers
- Pronto Roofing and Construction LtdRoofers
- Instal Systems LtdPlumbers and heating engineers
- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
Also registered at this address
9 other companies use the same registered office as Longsword Building & Maintenance Services Ltd.
- Akv Carparts LtdMotor traders
- Building Best LimitedFinishing trades
- Eco Building Solutions LtdSpecialist contractors
- Evialex LtdProperty developers
- Idm Carpentry LtdJoiners and carpenters
- Leks UK LtdSpecialist contractors
- Quality Fire Solutions LtdBuilders
- Reliable Gas and Plumbing LimitedPlumbers and heating engineers
- Youmax LtdBuilders
What happens if Longsword Building & Maintenance Services 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 10892030
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 July 2017 (9 years ago)
- Registered office
- 318 Old Street, London, EC1V 9DR
- Nature of business
- Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999)
Agents involved in the sale of a variety of goods (SIC 46190)
Non-specialised wholesale trade (SIC 46900) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 20 June 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Lookoutliving Ltd2024
- Lopro Limited2010
- Lorven Engineering Ltd2020
- Lot Installations Limited2023
- Lotor Limited2026
- Love Your Wood Floor UK Limited2026
- LP Lifts Ltd2023
- LPC Interiors Limited2026
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Longsword Building & Maintenance Services Ltd's accounts due?
Longsword Building & Maintenance Services Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Longsword Building & Maintenance Services Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Longsword Building & Maintenance Services Ltd still trading?
Longsword Building & Maintenance Services 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 Longsword Building & Maintenance Services Ltd do?
Longsword Building & Maintenance Services Ltd is registered under Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999); Agents involved in the sale of a variety of goods (SIC 46190); Non-specialised wholesale trade (SIC 46900).
How old is Longsword Building & Maintenance Services Ltd?
Longsword Building & Maintenance Services Ltd was incorporated on 31 July 2017, 9 years ago.
Has Longsword Building & Maintenance Services Ltd won public sector contracts?
Yes. Longsword Building & Maintenance Services Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from L&Q Construction.
What is the penalty if Longsword Building & Maintenance Services 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 Longsword Building & Maintenance Services 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.