- Companies
- Installers
- Birmingham
- Proline Internals Ltd
Proline Internals Ltd
- Company number
- 10097731
- Incorporated
- 1 Apr 201610 years trading
- Registered office
- Lifford Hall, Tunnel Lane, Birmingham, West Midlands, B30 3JN
- Nature of business
- Other construction installation
Proline Internals Ltd is a 10-year-old private limited company registered in Birmingham, company number 10097731, one of 301 installation companies (insulation, lifts, shutters and similar) in Birmingham. 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.
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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 £73K (+50.1%) on the year before, to £218K.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £1.5M against £1.3M owed within a year: 1.1 times cover.
- 3 employees on average during the year.
- 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 | £218K | £634K | £1.5M | £1.3M | 3 |
| 31 Mar 2024 | £145K | £458K | £1M | £870K | 3 |
| 31 Mar 2023 | £118K | £59K | £501K | £315K | 3 |
| 31 Mar 2022 | £113K | £48K | £753K | £535K | 3 |
| 31 Mar 2021 | £60K | £532K | £662K | £437K | 2 |
| 31 Mar 2020 | £15K | £154K | £141K | 2 | |
| 31 Mar 2019 | £18K | £118K | £98K | 2 | |
| 31 Mar 2018 | £5,286 | £41K | £49K | 2 | |
| 31 Mar 2017 | £24K | £49K | £24K | 2 |
Where Proline Internals Ltd is registered
The registered office is in Birmingham (B30), in the Birmingham local authority area, West Midlands. Show B30 3JN on a map.
Other trade companies in B30
- Vwgspecialist Coventry LtdMechanics and garages
- Maxol Electrical Services LtdElectricians
- Mawddach Construction LtdBuilders
- Primecare Cleaning Services LimitedCleaning companies
- M.Daffern Building LtdBuilders
- Procore Electrical LtdElectricians
- Ejs Roofing LimitedRoofers
- Top Top Tier Cleaners LtdCleaning companies
Also registered at this address
6 other companies use the same registered office as Proline Internals Ltd.
- Ashdurn Scaffolding LimitedScaffolders
- Bratt Building Plumbing & Roofing LimitedFinishing trades
- Ceema LtdCivil engineering
- Middlefield Properties LimitedProperty developers
- N Taylor Ltd T/A Nccontracts LtdSpecialist contractors
- Orion - Link LimitedMachinery repair and installation
What happens if Proline Internals 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
- 10097731
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 April 2016 (10 years ago)
- Registered office
- Lifford Hall, Tunnel Lane, Birmingham, West Midlands, B30 3JN
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 9 July 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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 Birmingham
Other active installation companies (insulation, lifts, shutters and similar) registered in Birmingham.
- Ptah Installations Limited2024
- Pure Path Energy Ltd2025
- R.M.F. Construction Services Limited2000
- Raft Property Maintenance Limited2006
- Raza Signworks Ltd2020
- RB Trading Services Limited2026
- RBP Group Limited2025
- React Maintenance Services Ltd2026
All installation companies (insulation, lifts, shutters and similar) in Birmingham · All trades in Birmingham · Installers across the UK
Frequently asked questions
When are Proline Internals Ltd's accounts due?
Proline Internals 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 Proline Internals 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 Proline Internals Ltd still trading?
Proline Internals 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 Proline Internals Ltd do?
Proline Internals Ltd is registered under Other construction installation (SIC 43290).
How old is Proline Internals Ltd?
Proline Internals Ltd was incorporated on 1 April 2016, 10 years ago.
What is the penalty if Proline Internals 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 Proline Internals 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.