- Companies
- Specialist contractors
- London
- Ag Martins Ltd
Ag Martins Ltd
- Company number
- 09988130
- Incorporated
- 4 Feb 201610 years trading
- Registered office
- Flat 53 Merlin Court, 28 Handley Drive, London, SE3 9BW
- Nature of business
- Other specialised construction activities n.e.c.
Ag Martins Ltd is a 10-year-old private limited company registered in London, company number 09988130, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 30 November 2027, and the CT600 for the period to 28 February 2027 is due at HMRC on 28 February 2028.
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 £26K (+563.5%) on the year before, to £30K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £46K against £17K owed within a year: 2.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2026 | £30K | £46K | £17K | 0 | |
| 28 Feb 2025 | £4,580 | £1 | £25K | £20K | 0 |
| 29 Feb 2024 | £34K | £36K | £2,278 | 1 | |
| 28 Feb 2023 | £24K | £27K | £3,213 | 1 | |
| 28 Feb 2022 | -£10K | £8,282 | £18K | -3 | |
| 28 Feb 2021 | -£1,407 | £17K | £18K | -3 | |
| 29 Feb 2020 | £431 | £7,824 | £7,393 | ||
| 28 Feb 2019 | -£1,273 | £934 | £2,207 | ||
| 28 Feb 2018 | £901 | £901 | |||
| 28 Feb 2017 | £1,649 | £1,649 |
Where Ag Martins Ltd is registered
The registered office is in London (SE3), in the Greenwich local authority area, London. Show SE3 9BW on a map.
Other trade companies in SE3
- Azaway LtdMotor traders
- Sunny Star Drylining LtdBuilders
- Lina Cleaning Services LtdCleaning companies
- J&J Property Works LtdJoiners and carpenters
- Nirvana Climate Solutions LtdPlumbers and heating engineers
- Akers Mep Services LtdPlumbers and heating engineers
- Pinewood Electrical LtdElectricians
- Zufc LtdCleaning companies
What happens if Ag Martins 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 30 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2027 to 31 Dec 2027 | £150 |
| 1 to 3 months late | 1 Jan 2028 to 29 Feb 2028 | £375 |
| 3 to 6 months late | 1 Mar 2028 to 31 May 2028 | £750 |
| More than 6 months late | From 1 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 2029 | 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
- 09988130
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 February 2016 (10 years ago)
- Registered office
- Flat 53 Merlin Court, 28 Handley Drive, London, SE3 9BW
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2026
- Last confirmation statement
- 4 February 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Aga Construction Limited2018
- Agc Build Ltd2025
- Agenor Log Ltd2019
- Agincourt Group Limited2015
- Agm Remediation Ltd2026
- Agroteam Consultancy Ltd2021
- Agve Florman Ltd2019
- Ah Designs Studio Ltd2021
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Ag Martins Ltd's accounts due?
Ag Martins Ltd's next accounts are due at Companies House by 30 November 2027 (in 413 days), covering the period to 28 February 2027.
When is Ag Martins Ltd's CT600 due?
The CT600 for the period to 28 February 2027 is due at HMRC by 28 February 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2027.
Is Ag Martins Ltd still trading?
Ag Martins 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 Ag Martins Ltd do?
Ag Martins Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Ag Martins Ltd?
Ag Martins Ltd was incorporated on 4 February 2016, 10 years ago.
What is the penalty if Ag Martins 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 Ag Martins 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.