N66 Ltd
- Company number
- 10006868
- Incorporated
- 16 Feb 201610 years trading
- Registered office
- Unit 5 Lime Tree Business Park, Lime Tree Road, Matlock, DE4 3EJ
- Nature of business
- Other specialised construction activities n.e.c.
N66 Ltd is a 10-year-old private limited company registered in Matlock, company number 10006868, one of 19 specialist construction companies in Matlock. 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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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 £80K (-32.1%) on the year before, to £169K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £75K against £16K owed within a year: 4.6 times cover.
- 7 employees on average, up from 6 the year before.
- Balance sheets on record for 10 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £169K | £44K | £75K | £16K | 7 |
| 31 Mar 2024 | £249K | £232K | £58K | 6 | |
| 31 Mar 2023 | £195K | £210K | £48K | 3 | |
| 31 Mar 2022 | £174K | £118K | £30K | 3 | |
| 31 Mar 2021 | £166K | £238K | £158K | 3 | |
| 31 Mar 2020 | £56K | £70K | £36K | 2 | |
| 31 Mar 2019 | £38K | £58K | £29K | ||
| 31 Mar 2018 | £1,494 | £14K | £14K | ||
| 31 Mar 2017 | -£1,890 | £2,008 | £4,924 | ||
| 28 Feb 2017 | -£1,890 | £2,008 | £4,924 |
Public contracts won
N66 Ltd has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all 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.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Peak District National Park Authority | MFF 173 2025-2026 Wessenden Valley Rhododendron Removal | Ceiling, not shown | 3 Mar 2026 |
Where N66 Ltd is registered
The registered office is in Matlock (DE4), in the Derbyshire Dales local authority area, East Midlands. Show DE4 3EJ on a map.
Other trade companies in DE4
- Wright Steel Solutions LtdBuilders
- Z&E Electrical Solutions LtdMachinery repair and installation
- Matlock Walling LtdCivil engineering
- Instatec (Services) LimitedSpecialist contractors
- L.D.E Automotive LimitedMotor traders
- Derbyshire Accident Repair LtdMechanics and garages
- Peak Edge Design and Build LtdBuilders
- Dickiedido LimitedPlumbers and heating engineers
Also registered at this address
3 other companies use the same registered office as N66 Ltd.
- Apex Access Group (Environment) LtdSpecialist contractors
- Apex Access Group (Fall Protection) LtdSpecialist contractors
- Apex Access Group (Rope Access) LtdSpecialist contractors
What happens if N66 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
- 10006868
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 February 2016 (10 years ago)
- Registered office
- Unit 5 Lime Tree Business Park, Lime Tree Road, Matlock, DE4 3EJ
- 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
- 15 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 Matlock
Other active specialist construction companies registered in Matlock.
- Parkes Site Engineering Ltd2007
- R G Millward Limited2011
- R M Eaton Stonemasonry Ltd2009
- Ropemasters Ltd2024
- Zippe Limited1983
- Apex Access Group (Environment) Ltd2026
- Apex Access Group (Fall Protection) Ltd2026
- Apex Access Group (Rope Access) Ltd2026
All specialist construction companies in Matlock · All trades in Matlock · Specialist contractors across the UK
Frequently asked questions
When are N66 Ltd's accounts due?
N66 Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is N66 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 N66 Ltd still trading?
N66 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 N66 Ltd do?
N66 Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is N66 Ltd?
N66 Ltd was incorporated on 16 February 2016, 10 years ago.
Has N66 Ltd won public sector contracts?
Yes. N66 Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Peak District National Park Authority.
What is the penalty if N66 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 N66 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.