- Companies
- Finishing trades
- London
- Ilyrian Construction Ltd
Ilyrian Construction Ltd
- Company number
- 10538030
- Incorporated
- 23 Dec 20169 years trading
- Registered office
- 1 Kings Avenue, London, N21 3NA
- Nature of business
- Other building completion and finishing
Ilyrian Construction Ltd is a 9-year-old private limited company registered in London, company number 10538030, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £769K (-85.1%) on the year before, to £135K.
- Net assets rose in 5 of 7 year-on-year comparisons on record.
- Current assets of £722K against £772K owed within a year: 0.9 times cover.
- 14 employees on average, up from 12 the year before.
- Balance sheets on record for 8 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £135K | £45K | £722K | £772K | 14 |
| 31 Dec 2023 | £904K | £603K | £1.4M | £734K | 12 |
| 31 Dec 2022 | £315K | £1.2M | £786K | 15 | |
| 31 Dec 2021 | £7,666 | £452K | £489K | 10 | |
| 31 Dec 2020 | £39K | £442K | £315K | 10 | |
| 31 Dec 2019 | £24K | £354K | £280K | 10 | |
| 31 Dec 2018 | £1,258 | £144K | £252K | £264K | |
| 31 Dec 2017 | -£21K | £36K | £49K | 4 |
Public contracts won
Ilyrian Construction Ltd has 5 public sector contract awards on record; the ones with their own published value total £495K, from 2024 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. 4 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- CHP2 awards
- BD Group2 awards
- Southern Housing1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| CHP | Property Maintenance Framework | Ceiling, not shown | 6 Jan 2025 |
| CHP | Ventilation Works at Riparian Square | £94K | 9 Oct 2024 |
| Southern Housing | Demolition and rebuild of retaining wall at Franklin Court | £76K | 4 Jul 2024 |
| BD Group | Replacement of Roofing for number 3-17 Cornworthy Road, Dagenham | £150K | 11 May 2024 |
| BD Group | Replacement of Roofing for number 3-17 Cornworthy Road, Dagenham | £175K | 11 May 2024 |
Where Ilyrian Construction Ltd is registered
The registered office is in London (N21), in the Enfield local authority area, London. Show N21 3NA on a map.
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- PP Carpentry LtdBuilders
- 6 Bourne Hill LtdMechanics and garages
- Empire Assessments NVQS LtdSpecialist contractors
- Emergency Sparkz LtdElectricians
Shared registered office
180 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Ilyrian 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 10538030
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 December 2016 (9 years ago)
- Registered office
- 1 Kings Avenue, London, N21 3NA
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 3 August 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in London
Other active building finishing companies registered in London.
- Image Property Management Limited2019
- Imarat Builders Mall Ltd2020
- Imash Limited2012
- Imb Coating Ltd2026
- Imberty Group Ltd2017
- Imc Construct Ltd2019
- Img Project Limited2026
- Impact Restoration Ltd2015
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are Ilyrian Construction Ltd's accounts due?
Ilyrian Construction Ltd's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Ilyrian Construction Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Ilyrian Construction Ltd still trading?
Ilyrian 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 Ilyrian Construction Ltd do?
Ilyrian Construction Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Ilyrian Construction Ltd?
Ilyrian Construction Ltd was incorporated on 23 December 2016, 9 years ago.
Has Ilyrian Construction Ltd won public sector contracts?
Yes. Ilyrian Construction Ltd has 5 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £495K), most recently from CHP.
What is the penalty if Ilyrian 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 Ilyrian 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.