- Companies
- Installers
- Cardiff
- Nexum Flow Systems Ltd
Nexum Flow Systems Ltd
- Company number
- 13738068
- Incorporated
- 11 Nov 20214 years trading
- Registered office
- PO Box 4385, 13738068 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Other construction installation
Nexum Flow Systems Ltd is a 4-year-old private limited company registered in Cardiff, company number 13738068, one of 99 installation companies (insulation, lifts, shutters and similar) in Cardiff. Companies House shows its accounts as overdue: they were due on 31 August 2026.
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 £1,103 (+83.8%) on the year before, to £2,419.
- Current assets of £150K against £160K owed within a year: 0.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 3 years, 2022 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2024 | £2,419 | £150K | £160K | 2 | |
| 30 Nov 2023 | £1,316 | £63K | £69K | 2 | |
| 30 Nov 2022 | £1,000 | £16K | 2 |
Where Nexum Flow Systems Ltd is registered
The registered office is in Cardiff (CF14), in the Caerphilly local authority area, Wales. Show CF14 8LH on a map.
Other trade companies in CF14
- Velren Group LtdProperty developers
- Premierroofcare LtdRoofers
- JLG Groundworks LtdCleaning companies
- Tidyvibz LtdCleaning companies
- Ayyappa MTD LtdBuilders
- KM Phoenix Pond, Garden & General Maintenance LtdLandscapers and gardeners
- Eco Green Property Service LtdFinishing trades
- S and J Accident Repairs LtdPainters and decorators
What happens if Nexum Flow Systems Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2026 to 30 Sep 2026 | £150 |
| 1 to 3 months late | 1 Oct 2026 to 30 Nov 2026 | £375 |
| 3 to 6 months late | 1 Dec 2026 to 28 Feb 2027 | £750 |
| More than 6 months late | From 1 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 30 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 2027 | 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
- 13738068
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 November 2021 (4 years ago)
- Registered office
- PO Box 4385, 13738068 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 19 March 2026
- Previous names
- Baltic Maintenance Ltd (until 20 Mar 2026)
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Cardiff
Other active installation companies (insulation, lifts, shutters and similar) registered in Cardiff.
- Omni Design Limited2005
- Ourown Designs Limited2017
- Parallel Contract Services Ltd2018
- Penylan Plumbing & Heating Ltd2011
- Physical Adaptation Solutions Limited2017
- R & E Groundcare Ltd2024
- Resin Bound Maintenance Ltd2025
- RHP Bathroom Services Limited2014
All installation companies (insulation, lifts, shutters and similar) in Cardiff · All trades in Cardiff · Installers across the UK
Frequently asked questions
When are Nexum Flow Systems Ltd's accounts due?
Nexum Flow Systems Ltd's accounts were due at Companies House on 31 August 2026 and the register shows them as overdue.
When is Nexum Flow Systems Ltd's CT600 due?
The CT600 for the period to 30 November 2025 is due at HMRC by 30 November 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2026.
Is Nexum Flow Systems Ltd still trading?
Nexum Flow Systems Ltd is listed as active on the Companies House register (checked 13 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 Nexum Flow Systems Ltd do?
Nexum Flow Systems Ltd is registered under Other construction installation (SIC 43290).
How old is Nexum Flow Systems Ltd?
Nexum Flow Systems Ltd was incorporated on 11 November 2021, 4 years ago.
What is the penalty if Nexum Flow Systems 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 Nexum Flow Systems Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.