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- Structural Membranes Specialists Limited
Company profile · Specialist contractors
Structural Membranes Specialists Limited
Structural Membranes Specialists Limited is a 36-year-old private limited company registered in Romford, company number 02537280, one of 279 specialist construction companies in Romford. 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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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Structural Membranes Specialists Limited over the years
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 £14K (-1.4%) on the year before, to £1M.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £1.5M against £582K owed within a year: 2.7 times cover.
- 21 employees on average, down from 22 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1M | £3,002 | £1.5M | £582K | 21 |
| 31 Mar 2024 | £1M | £5,038 | £1.4M | £433K | 22 |
| 31 Mar 2023 | £976K | £84K | £1.4M | £451K | 19 |
| 31 Mar 2022 | £685K | £3,346 | £1.2M | £574K | 18 |
| 31 Mar 2021 | £519K | £676 | £1.2M | £704K | 15 |
| 31 Mar 2020 | £540K | £8,819 | £1.1M | £581K | 17 |
| 31 Mar 2019 | £602K | £7,676 | £1.1M | £558K | 16 |
| 31 Mar 2018 | £478K | £8,968 | £985K | £592K | 18 |
| 31 Mar 2017 | £558K | £23K | £1.2M | £682K | 15 |
| 31 Mar 2016 | £447K | £129K | £861K | £489K |
Public contracts won
Structural Membranes Specialists Limited has one public sector contract award on record; the ones with their own published value total £83K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Southend-on-Sea City Council | Heritage Centre Roof Repairs | £83K | 8 Jan 2026 |
Where Structural Membranes Specialists Limited is registered
The registered office is in Romford (RM3), in the Havering local authority area, London. Show RM3 8UR on a map.
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What happens if Structural Membranes Specialists Limited 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
- 02537280
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 September 1990 (36 years ago)
- Registered office
- Unit 6 Falcon Business Park, Ashton Road, Romford, Essex, RM3 8UR
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 5 September 2026
- Charges (mortgages)
- 1 outstanding of 3 registered
- Previous names
- Structural Sealant Services Limited (until 22 Feb 2012)
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 Romford
Other active specialist construction companies registered in Romford.
- Stunder Ltd2011
- SV Proch Ltd2024
- SV Smart Interiors Ltd2026
- Szergej Lozovoj Ltd2019
- T W Construction Services Ltd2025
- T&D Brickwork Ltd2023
- Taylor Associates (London) Ltd1999
- TD Maintenance Ltd2023
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Frequently asked questions
When are Structural Membranes Specialists Limited's accounts due?
Structural Membranes Specialists Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Structural Membranes Specialists Limited'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 Structural Membranes Specialists Limited still trading?
Structural Membranes Specialists Limited 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 Structural Membranes Specialists Limited do?
Structural Membranes Specialists Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Structural Membranes Specialists Limited?
Structural Membranes Specialists Limited was incorporated on 5 September 1990, 36 years ago.
Has Structural Membranes Specialists Limited won public sector contracts?
Yes. Structural Membranes Specialists Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £83K), most recently from Southend-on-Sea City Council.
What is the penalty if Structural Membranes Specialists Limited 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 Structural Membranes Specialists Limited 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.