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- Millennium Window Systems Ltd
Company profile · Installers
Millennium Window Systems Ltd
Millennium Window Systems Ltd is a 10-year-old private limited company registered in Northallerton, company number 10041943, one of 8 installation companies (insulation, lifts, shutters and similar) in Northallerton. 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.
Millennium Window Systems 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 down £14K (-13.5%) on the year before, to £91K.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £156K against £79K owed within a year: 2.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £91K | £156K | £79K | 2 | |
| 31 Mar 2024 | £105K | £138K | £22K | 2 | |
| 31 Mar 2023 | £113K | £185K | £70K | 2 | |
| 31 Mar 2022 | £94K | £143K | £56K | 2 | |
| 31 Mar 2021 | £100K | £162K | £65K | 2 | |
| 31 Mar 2020 | £65K | £108K | £50K | 4 | |
| 31 Mar 2019 | -£57K | -£109K | £62K | ||
| 31 Mar 2018 | £27K | £95K | £81K | ||
| 31 Mar 2017 | £6,620 | £87K | £98K |
Where Millennium Window Systems Ltd is registered
The registered office is in Northallerton (DL7), in the North Yorkshire local authority area, Yorkshire and The Humber. Show DL7 8JZ on a map.
Other trade companies in DL7
- Telperion Networks LtdElectricians
- HB LVT & Commercial Flooring LtdFloor and wall tilers
- Warm Room Solutions LtdInstallers
- Taylor & Taylor Builders LtdJoiners and carpenters
- L A Baines Developments LimitedProperty developers
- Carebridge Cleaning Services LtdCleaning companies
- Equinox Contracts (North-East) LimitedElectricians
- Lee Slater LimitedSpecialist contractors
What happens if Millennium Window Systems 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
- 10041943
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 March 2016 (10 years ago)
- Registered office
- 159 - 160 Suite D, High Street, Northallerton, North Yorkshire, DL7 8JZ
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 3 March 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Northallerton
Other active installation companies (insulation, lifts, shutters and similar) registered in Northallerton.
- Reloft U.K. Limited2019
- Seal Fire & Airsealing Solutions Ltd2019
- Warm Room Solutions Ltd2026
- C S Process Contractor Limited2015
- Chris Penketh Associates Limited1993
- Duoserve Ltd2020
- K B B Home Installations Ltd2015
All installation companies (insulation, lifts, shutters and similar) in Northallerton · All trades in Northallerton · Installers across the UK
Frequently asked questions
When are Millennium Window Systems Ltd's accounts due?
Millennium Window Systems 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 Millennium Window Systems 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 Millennium Window Systems Ltd still trading?
Millennium Window Systems 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 Millennium Window Systems Ltd do?
Millennium Window Systems Ltd is registered under Other construction installation (SIC 43290).
How old is Millennium Window Systems Ltd?
Millennium Window Systems Ltd was incorporated on 3 March 2016, 10 years ago.
What is the penalty if Millennium Window Systems 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 Millennium Window Systems Ltd on Companies House for filed documents, officers and the full history.
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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.