- Company number
- 06770750
- Incorporated
- 11 Dec 200817 years trading
- Registered office
- 304 Bishops Rise, Hatfield, Hertfordshire, AL10 9QT
- Nature of business
- Glazing
Althamer's Windows Ltd is a 17-year-old private limited company registered in Hatfield, company number 06770750, one of 6 glazing companies in Hatfield. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £5,941 (-35.6%) on the year before, to £11K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £41K against £30K owed within a year: 1.4 times cover.
- 2 employees on average, down from 3 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 Dec 2025 | £11K | £41K | £30K | 2 | |
| 31 Dec 2024 | £17K | £57K | £59K | £26K | 3 |
| 31 Dec 2023 | £12K | £41K | £49K | £13K | 2 |
| 31 Dec 2022 | £449 | £7,871 | 0 | ||
| 31 Dec 2021 | £1,546 | £0 | £46K | £4,085 | 0 |
| 31 Dec 2020 | £1,126 | £26K | £75K | £35K | 0 |
| 31 Dec 2019 | £420 | £53K | £59K | ||
| 31 Dec 2018 | £556 | £49K | £55K | ||
| 31 Dec 2017 | £1,758 | £88K | £94K | ||
| 31 Dec 2016 | £124 | £21K | £24K |
Who runs and owns Althamer's Windows Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| G*** A*** | Director | Jan 2014 |
| M*** S*** | Director | Feb 2014 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| F*** O*** | Secretary | Dec 2008 | Jun 2012 |
| G*** A*** | Director | Dec 2008 | Apr 2012 |
| F*** O*** | Director | Apr 2012 | Feb 2014 |
People with significant control (2)
Where Althamer's Windows Ltd is registered
The registered office is in Hatfield (AL10), in the Welwyn Hatfield local authority area, East of England. Show AL10 9QT on a map.
Other trade companies in AL10
- Hiwa Shine LtdCleaning companies
- M1 Construction LtdBuilders
- Tyg Landscaping LimitedLandscapers and gardeners
- RR Roofing Services LtdBuilders
- Tyg Bathrooms and Kitchens LimitedBuilders
- Knights Decorating LtdPainters and decorators
- Gvre LimitedBuilders
- Urbn Developments (Hertfordshire) LimitedFinishing trades
Also registered at this address
1 other company uses the same registered office as Althamer's Windows Ltd.
- Cube Property Development LtdBuilders
What happens if Althamer's Windows 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 06770750
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 December 2008 (17 years ago)
- Registered office
- 304 Bishops Rise, Hatfield, Hertfordshire, AL10 9QT
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 5 March 2026
Filing notes for glazing companies
Glazing companies often take deposits before work starts. Deposits held at the year end are a liability, not income, until the job is done.
Similar companies in Hatfield
Other active glazing companies registered in Hatfield.
- Architectural Aluminium Fixing Ltd2008
- Hollis Home Improvements Ltd2003
- Praesidio Doors Limited2022
- Pure Glass Partitions Ltd2019
- Ultra Aluminium and UPVC Ltd2023
All glazing companies in Hatfield · All trades in Hatfield · Glaziers across the UK
Frequently asked questions
When are Althamer's Windows Ltd's accounts due?
Althamer's Windows Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Althamer's Windows Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Althamer's Windows Ltd still trading?
Althamer's Windows 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 Althamer's Windows Ltd do?
Althamer's Windows Ltd is registered under Glazing (SIC 43342).
How old is Althamer's Windows Ltd?
Althamer's Windows Ltd was incorporated on 11 December 2008, 17 years ago.
Who runs Althamer's Windows Ltd?
Althamer's Windows Ltd has 2 active directors, the longest-serving appointed in Jan 2014. Their names and service addresses are on the Companies House register.
Who owns Althamer's Windows Ltd?
2 people or companies have significant control of Althamer's Windows Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Althamer's Windows 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 Althamer's Windows 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.