- Companies
- Plumbers and heating engineers
- Blackwood
- Sers (Solar & Renewable Technologies) Holdings Limited
Sers (Solar & Renewable Technologies) Holdings Limited
- Company number
- 07738284
- Incorporated
- 12 Aug 201115 years trading
- Registered office
- 1 Nyddfa Yard Nyddfa Yard, Pengam, Blackwood, NP12 3UZ
- Nature of business
- Plumbing, heat and air-conditioning installation
Sers (Solar & Renewable Technologies) Holdings Limited is a 15-year-old private limited company registered in Blackwood, company number 07738284, one of 20 plumbing and heating companies in Blackwood. 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 £113 (-8%) on the year before, to -£1,521.
- Net assets rose in 0 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 | -£1,521 | £63 | £1,654 | 0 | |
| 31 Dec 2024 | -£1,408 | £35 | £1,513 | 0 | |
| 31 Dec 2023 | -£1,336 | £7 | £1,413 | 0 | |
| 31 Dec 2022 | -£1,248 | £95 | £1,413 | 0 | |
| 31 Dec 2021 | -£1,176 | £67 | £1,313 | 0 | |
| 31 Dec 2020 | -£1,089 | £54 | £1,213 | 0 | |
| 31 Dec 2019 | -£1,001 | £22 | £1,093 | 0 | |
| 31 Dec 2018 | -£929 | £999 | |||
| 31 Dec 2017 | £43 | £27 | |||
| 31 Dec 2016 | £95 | £25 |
Where Sers (Solar & Renewable Technologies) Holdings Limited is registered
The registered office is in Blackwood (NP12), in the Caerphilly local authority area, Wales. Show NP12 3UZ on a map.
Other trade companies in NP12
- Hohm Property Group LtdProperty developers
- R&C Mechanics LimitedMechanics and garages
- M & R Property Solutions (SW) LimitedFinishing trades
- JLH Scaffolding LtdScaffolders
- SM Contracting SW LtdBuilders
- Top Notch Carpentry Services LimitedInstallers
- Cardiff Bathrooms LtdFinishing trades
- CB Brickwork & Building LtdSpecialist contractors
Also registered at this address
2 other companies use the same registered office as Sers (Solar & Renewable Technologies) Holdings Limited.
What happens if Sers (Solar & Renewable Technologies) Holdings Limited 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
- 07738284
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 August 2011 (15 years ago)
- Registered office
- 1 Nyddfa Yard Nyddfa Yard, Pengam, Blackwood, NP12 3UZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 12 August 2026
- Previous names
- Sers (Solar & Renable Technologies) Holdings Limited (until 22 Dec 2011)
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Blackwood
Other active plumbing and heating companies registered in Blackwood.
- WT Sprinkler Division Ltd2025
- Ams Heating & Plumbing Limited2010
- Bezt Heat Ltd2018
- Broadway Agencies Limited2002
- CŴL Tech Cyf.2025
- Duggan Plumbing Services Limited2020
- Elite Plumbing South Wales Limited2026
- Evans Vent Systems Ltd2015
All plumbing and heating companies in Blackwood · All trades in Blackwood · Plumbers and heating engineers across the UK
Frequently asked questions
When are Sers (Solar & Renewable Technologies) Holdings Limited's accounts due?
Sers (Solar & Renewable Technologies) Holdings Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Sers (Solar & Renewable Technologies) Holdings Limited'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 Sers (Solar & Renewable Technologies) Holdings Limited still trading?
Sers (Solar & Renewable Technologies) Holdings Limited 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 Sers (Solar & Renewable Technologies) Holdings Limited do?
Sers (Solar & Renewable Technologies) Holdings Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Sers (Solar & Renewable Technologies) Holdings Limited?
Sers (Solar & Renewable Technologies) Holdings Limited was incorporated on 12 August 2011, 15 years ago.
What is the penalty if Sers (Solar & Renewable Technologies) Holdings Limited 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 Sers (Solar & Renewable Technologies) Holdings Limited 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.