- Companies
- Specialist contractors
- Sine Consulting Limited
Sine Consulting Limited
- Company number
- 04530012
- Incorporated
- 9 Sep 200224 years trading
- Registered office
- Derwent House, Mandale Business Park, Belmont Durham, Co Durham, DH1 1TH
- Nature of business
- Other specialised construction activities n.e.c.; Management consultancy activities other than financial management
Sine Consulting Limited is a 24-year-old private limited company registered in Belmont Durham, company number 04530012, one of the UK's specialist construction companies. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 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 down £46K (-6.5%) on the year before, to £664K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £954K against £316K owed within a year: 3.0 times cover.
- 24 employees on average during the year.
- 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 |
|---|---|---|---|---|---|
| 30 Apr 2026 | £664K | £538K | £954K | £316K | 24 |
| 30 Apr 2025 | £710K | £604K | £915K | 24 | |
| 30 Apr 2024 | £770K | £595K | £962K | £221K | 21 |
| 30 Apr 2023 | £895K | £772K | £1.1M | £191K | 18 |
| 30 Apr 2022 | £930K | £865K | £1.1M | £205K | 16 |
| 30 Apr 2021 | £811K | £623K | £989K | £195K | 16 |
| 30 Apr 2020 | £748K | £633K | £942K | £211K | 16 |
| 30 Apr 2019 | £669K | £534K | £828K | £185K | 17 |
| 30 Apr 2018 | £535K | £401K | £738K | £228K | 16 |
| 30 Apr 2017 | £383K | £276K | £529K | £172K | 12 |
Where Sine Consulting Limited is registered
The registered office is in Belmont Durham (DH1), in the County Durham local authority area, North East. Show DH1 1TH on a map.
Other trade companies in DH1
- Drives & Patios 4 You LtdLandscapers and gardeners
- Hanser LimitedBuilders
- McCluskey Roofing North East LtdRoofers
- Phone and Laptop Repairs Ne LtdRepair services
- Tyne & Wear Commercial Cleaning LtdCleaning companies
- HZG Projects LimitedCivil engineering
- Damiora Group LtdFacilities management
- James Lawton Homes ( Whickham Farm ) LtdProperty developers
What happens if Sine Consulting 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 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 04530012
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 September 2002 (24 years ago)
- Registered office
- Derwent House, Mandale Business Park, Belmont Durham, Co Durham, DH1 1TH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Management consultancy activities other than financial management (SIC 70229) - Year end
- 30 April (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 25 November 2025
- Previous names
- Straughair Consulting Limited (until 18 Dec 2006)
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
Other active specialist construction companies.
Frequently asked questions
When are Sine Consulting Limited's accounts due?
Sine Consulting Limited's next accounts are due at Companies House by 31 January 2028 (in 475 days), covering the period to 30 April 2027.
When is Sine Consulting Limited's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Sine Consulting Limited still trading?
Sine Consulting 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 Sine Consulting Limited do?
Sine Consulting Limited is registered under Other specialised construction activities n.e.c. (SIC 43999); Management consultancy activities other than financial management (SIC 70229).
How old is Sine Consulting Limited?
Sine Consulting Limited was incorporated on 9 September 2002, 24 years ago.
What is the penalty if Sine Consulting 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 Sine Consulting 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.