- Company number
- 10067412
- Incorporated
- 16 Mar 201610 years trading
- Registered office
- 11 Indells, Hatfield, AL10 9JA
- Nature of business
- Construction of domestic buildings
Alymar Ltd is a 10-year-old private limited company registered in Hatfield, company number 10067412, one of 112 building contractors in Hatfield. 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.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Alymar LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £10K (-81.8%) on the year before, to £2,247.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £5,146 against £46 owed within a year: more than 10 times cover.
- 2 employees on average, up from 1 the year before.
- 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 | £2,247 | £5,146 | £46 | 2 | |
| 31 Mar 2024 | £12K | £4,210 | 1 | ||
| 31 Mar 2023 | £24K | £684 | £0 | 1 | |
| 31 Mar 2022 | £19K | £14K | £1 | 1 | |
| 31 Mar 2021 | £2,503 | £37K | £1 | 1 | |
| 31 Mar 2020 | £558 | £1,317 | £759 | 1 | |
| 31 Mar 2019 | £4,823 | £6,179 | £1,356 | ||
| 31 Mar 2018 | £4,040 | £4,237 | £197 | ||
| 31 Mar 2017 | £3,198 | £3,973 | £775 |
Where Alymar Ltd is registered
The registered office is in Hatfield (AL10), in the Welwyn Hatfield local authority area, East of England. Show AL10 9JA 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
What happens if Alymar 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
- 10067412
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 March 2016 (10 years ago)
- Registered office
- 11 Indells, Hatfield, AL10 9JA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 15 March 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Hatfield
Other active building contractors registered in Hatfield.
- Aston Knights Construction Ltd2024
- B & A Woodworking Limited2006
- Belmondo Building Ltd2013
- BGS Homes Ltd2024
- Biosutility Ltd2025
- Borister Ltd2014
- Brookgate Construction Limited2024
- Brothers L Construction & Building Limited2022
All building contractors in Hatfield · All trades in Hatfield · Builders across the UK
Frequently asked questions
When are Alymar Ltd's accounts due?
Alymar 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 Alymar 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 Alymar Ltd still trading?
Alymar 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 Alymar Ltd do?
Alymar Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Alymar Ltd?
Alymar Ltd was incorporated on 16 March 2016, 10 years ago.
What is the penalty if Alymar 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 Alymar 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.