- Companies
- Specialist contractors
- Llanelli
- Celtic Green Energy Ltd
Celtic Green Energy Ltd
- Company number
- 08544634
- Incorporated
- 24 May 201313 years trading
- Registered office
- Unit 13 Church Road Industrial Estate, Gorslas, Llanelli, Carmarthenshire, SA14 7NN
- Nature of business
- Other specialised construction activities n.e.c.
Celtic Green Energy Ltd is a 13-year-old private limited company registered in Llanelli, company number 08544634, one of 16 specialist construction companies in Llanelli. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 28 May 2026 is due at HMRC on 28 May 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 up £180K (+776.3%) on the year before, to £157K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £305K against £167K owed within a year: 1.8 times cover.
- 6 employees on average during the year.
- 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 |
|---|---|---|---|---|---|
| 28 May 2025 | £157K | £68K | £305K | £167K | 6 |
| 28 May 2024 | -£23K | £7,103 | £238K | £254K | 6 |
| 28 May 2023 | £134K | £63K | £255K | £69K | 4 |
| 28 May 2022 | £134K | £63K | £255K | £69K | 4 |
| 28 May 2021 | £3,309 | £2,219 | £16K | £16K | 1 |
| 31 May 2020 | £2,309 | £2,419 | £17K | £18K | 2 |
| 31 May 2019 | -£9,316 | £12K | £16K | £25K | |
| 31 May 2018 | -£9,165 | £239 | £14K | £24K | |
| 31 May 2017 | £2,118 | £7,104 | £16K | £14K | |
| 31 May 2016 | £8,100 | £3,000 | £1,000 |
Public contracts won
Celtic Green Energy Ltd has one public sector contract award on record (2021). 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 |
|---|---|---|---|
| Procure Plus Holdings Limited | Framework Agreement for the Supply and Installation of Low and Zero Carbon Technologies | Ceiling, not shown | 9 Nov 2021 |
Where Celtic Green Energy Ltd is registered
The registered office is in Llanelli (SA14), in the Carmarthenshire local authority area, Wales. Show SA14 7NN on a map.
Other trade companies in SA14
- Llanelli Service Centre LtdMechanics and garages
- Cavity Wall Extraction UK LtdBuilders
- CCS Repairs LtdMachinery repair and installation
- JP Bathroom Services LtdInstallers
- Uplands Realty LimitedProperty developers
- Plasnewydd Homes LimitedProperty developers
- Afon Tawe Retreats LtdProperty developers
- Osbournandjames LtdProperty developers
What happens if Celtic Green Energy 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 May 2027 | £200 |
| 3 months late | 28 Aug 2027 | another £200 |
| 6 months late | 28 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 May 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
- 08544634
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 May 2013 (13 years ago)
- Registered office
- Unit 13 Church Road Industrial Estate, Gorslas, Llanelli, Carmarthenshire, SA14 7NN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 May 2025
- Last confirmation statement
- 24 May 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 Llanelli
Other active specialist construction companies registered in Llanelli.
- Csi Llanelli Limited2009
- De Lewis Engineering Ltd2016
- DJ UPVC UK Ltd2013
- Expa Limited2004
- Just Lime Limited2014
- L. Weston Construction Ltd2025
- Project Crane Services Ltd2024
- RJ Labour Services Ltd2025
All specialist construction companies in Llanelli · All trades in Llanelli · Specialist contractors across the UK
Frequently asked questions
When are Celtic Green Energy Ltd's accounts due?
Celtic Green Energy Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 28 May 2026.
When is Celtic Green Energy Ltd's CT600 due?
The CT600 for the period to 28 May 2026 is due at HMRC by 28 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Celtic Green Energy Ltd still trading?
Celtic Green Energy 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 Celtic Green Energy Ltd do?
Celtic Green Energy Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Celtic Green Energy Ltd?
Celtic Green Energy Ltd was incorporated on 24 May 2013, 13 years ago.
Has Celtic Green Energy Ltd won public sector contracts?
Yes. Celtic Green Energy Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from PROCURE PLUS HOLDINGS LIMITED.
What is the penalty if Celtic Green Energy 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 Celtic Green Energy 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.