- Companies
- Finishing trades
- London
- Trident Building & Maintenance Ltd
Trident Building & Maintenance Ltd
- Company number
- 03174383
- Incorporated
- 18 Mar 199630 years trading
- Registered office
- Unit 115, Accounts by Simply, 40 Gracechurch Street, London, EC3V 0BT
- Nature of business
- Other building completion and finishing
Trident Building & Maintenance Ltd is a 30-year-old private limited company registered in London, company number 03174383, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 2027.
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 Trident Building & Maintenance 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 £6,129 (-8.7%) on the year before, to £64K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £137K against £68K owed within a year: 2.0 times cover.
- 2 employees on average, down from 3 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £64K | £105K | £137K | £68K | 2 |
| 30 Jun 2024 | £70K | £113K | £176K | £98K | 3 |
| 30 Jun 2023 | £135K | £209K | £267K | £122K | 3 |
| 30 Jun 2022 | £57K | £216K | £296K | £220K | 3 |
| 30 Jun 2021 | -£74K | £77K | £155K | £198K | 5 |
| 30 Jun 2020 | -£149K | £34K | £45K | £162K | 5 |
| 30 Sep 2019 | -£88K | £16K | £50K | £148K | 5 |
| 30 Sep 2018 | £15K | £169K | £222K | £210K | 6 |
| 31 Mar 2017 | £14K | £118K | £113K | ||
| 31 Mar 2016 | £335 | £6,912 | £70K | £83K |
Where Trident Building & Maintenance Ltd is registered
The registered office is in London (EC3V), in the City of London local authority area, London. Show EC3V 0BT on a map.
Other trade companies in EC3V
- Rekondition LtdRepair services
- Revora Cleaning & Hygiene Solutions LtdCleaning companies
- Kingston Leeds LimitedProperty developers
- Riverside Cleaning Group LtdCleaning companies
- Milman Services LtdInstallers
- F and F Electrical Services LtdElectricians
- Lilyame LimitedProperty developers
- Truewatt LtdElectricians
Shared registered office
26 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Trident Building & Maintenance 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 03174383
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 March 1996 (30 years ago)
- Registered office
- Unit 115, Accounts by Simply, 40 Gracechurch Street, London, EC3V 0BT
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 5 March 2026
- Previous names
- Trident Maintenance Limited (until 12 Dec 2014)
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in London
Other active building finishing companies registered in London.
- Trio Homes Constructions Ltd2014
- Trio Property Maintenance Ltd2025
- Trive Interiors Limited2007
- TRJ Shopfronts Ltd2021
- True Build & Design Ltd2022
- True Build Services Ltd2024
- Trustworthy Maintenance Ltd2024
- Tse Construction Ltd2025
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are Trident Building & Maintenance Ltd's accounts due?
Trident Building & Maintenance Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Trident Building & Maintenance Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Trident Building & Maintenance Ltd still trading?
Trident Building & Maintenance 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 Trident Building & Maintenance Ltd do?
Trident Building & Maintenance Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Trident Building & Maintenance Ltd?
Trident Building & Maintenance Ltd was incorporated on 18 March 1996, 30 years ago.
What is the penalty if Trident Building & Maintenance 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 Trident Building & Maintenance 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.