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- Norbloc Construction Ltd.
Company profile · Specialist contractors
Norbloc Construction Ltd.
Norbloc Construction Ltd. is a 18-year-old private limited company registered in Halkirk, company number SC336380, one of the UK's specialist construction companies. 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.
Norbloc Construction Ltd. 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 up £62K (+5.8%) on the year before, to £1.1M.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £1.3M against £486K owed within a year: 2.7 times cover.
- 26 employees on average, down from 28 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 | £1.1M | £695K | £1.3M | £486K | 26 |
| 31 Mar 2024 | £1.1M | £543K | £1.1M | £351K | 28 |
| 31 Mar 2023 | £1M | £577K | £924K | £243K | 28 |
| 31 Mar 2022 | £712K | £349K | £766K | £315K | 26 |
| 31 Mar 2021 | £606K | £319K | £564K | £276K | 25 |
| 31 Mar 2020 | £600K | £285K | £760K | £454K | 24 |
| 31 Mar 2019 | £576K | £165K | £683K | £426K | 28 |
| 31 Mar 2018 | £473K | £311K | £616K | £431K | 24 |
| 31 Mar 2017 | £452K | £262K | £691K | £388K | 23 |
| 31 Mar 2016 | £196K | £145K | £286K | £211K | 16 |
Public contracts won
Norbloc Construction Ltd. has 5 public sector contract awards on record; the ones with their own published value total £589K, from 2017 to 2025. Source: Contracts Finder and Find a Tender award notices. For 1 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 |
|---|---|---|---|
| NRS Dounreay | LINC Opportunity 25 - D1201 Welfare facility upgrades - Phase 2 | £138K | 22 Jan 2025 |
| NRS - Dounreay | D1201 Modification Package of Works - Phase 1 | £80K | 23 Aug 2024 |
| CTM Portal for the NDA Shared Services Alliance | Provision of Minor Civil Services | £25K | 21 Sep 2021 |
| Dounreay Site Restoration Limited | D3000 / D3001 Cladding Modifications | £346K | 5 Feb 2018 |
| Dounreay Site Restoration Limited | Framework Agreement for Building and Civils Services | Ceiling, not shown | 27 Jul 2017 |
Where Norbloc Construction Ltd. is registered
The registered office is in Halkirk (KW12), in the Highland local authority area, Scotland. Show KW12 6YQ on a map.
Other trade companies in KW12
- G Sutherland Properties LtdProperty developers
- M Mackay Services LtdSpecialist contractors
- Locard Homes LimitedProperty developers
- Gary Elder Fencing LtdSpecialist contractors
- Alix Groundwork LtdCivil engineering
- Morris Motors Caithness LtdMechanics and garages
- Clashaig Repairs LtdMachinery repair and installation
- Messrs G S Donn LtdMechanics and garages
What happens if Norbloc Construction 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
- SC336380
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 January 2008 (18 years ago)
- Registered office
- Lower Fens, Camilla Street, Halkirk, Caithness, KW12 6YQ
- 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
- 18 January 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
Other active specialist construction companies.
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- Metro Lift Services Limited2008
- B G Taylor Groundworks Limited2008
- Offshore Scaffold Inspection Services Ltd2008
- Strike Lightning Protection Services Limited2008
- W Barr Construction Services Limited2008
- Auto Doors (Scotland) Limited2008
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Frequently asked questions
When are Norbloc Construction Ltd.'s accounts due?
Norbloc Construction Ltd.'s next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Norbloc Construction 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 Norbloc Construction Ltd. still trading?
Norbloc Construction 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 Norbloc Construction Ltd. do?
Norbloc Construction Ltd. is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Norbloc Construction Ltd.?
Norbloc Construction Ltd. was incorporated on 18 January 2008, 18 years ago.
Has Norbloc Construction Ltd. won public sector contracts?
Yes. Norbloc Construction Ltd. has 5 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £589K), most recently from NRS Dounreay.
What is the penalty if Norbloc Construction 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 Norbloc Construction 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.