- Companies
- Specialist contractors
- Portsmouth
- C45 Limited
C45 Limited
- Company number
- 10981244
- Incorporated
- 26 Sep 20179 years trading
- Registered office
- Unit 6, ST. Georges Square, Portsmouth, Hampshire, PO1 3EY
- Nature of business
- Other specialised construction activities n.e.c.
C45 Limited is a 9-year-old private limited company registered in Portsmouth, company number 10981244, one of 193 specialist construction companies in Portsmouth. Its next accounts are due at Companies House on 28 June 2027, and the CT600 for the period to 28 September 2026 is due at HMRC on 28 September 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 £72K (-31.7%) on the year before, to £154K.
- Net assets rose in 5 of 7 year-on-year comparisons on record.
- Current assets of £947K against £379K owed within a year: 2.5 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Sep 2025 | £154K | £176K | £947K | £379K | 2 |
| 28 Sep 2024 | £226K | £292K | £1M | £248K | 1 |
| 28 Sep 2023 | £182K | £54K | £332K | £111K | 2 |
| 30 Sep 2022 | £125K | £52K | £106K | £4,817 | 0 |
| 30 Sep 2021 | £58K | £75K | £35K | 0 | |
| 30 Sep 2020 | £12K | £20K | £7,696 | 1 | |
| 30 Sep 2019 | -£4,188 | £148K | £152K | 1 | |
| 30 Sep 2018 | £10 |
Where C45 Limited is registered
The registered office is in Portsmouth (PO1), in the Portsmouth local authority area, South East. Show PO1 3EY on a map.
Other trade companies in PO1
- Design 1805 Southern LtdJoiners and carpenters
- Portsmouth Roofing LtdRoofers
- Peterborough Mews (London) LimitedProperty developers
- Doxa Facility Group LtdCleaning companies
- Crestpoint Cleaning & Facilities LtdCleaning companies
- Dark Rose Cleaning Co LtdCleaning companies
- PDS Garage Services LtdMechanics and garages
- HDF Roofing LtdRoofers
Also registered at this address
16 other companies use the same registered office as C45 Limited.
- Atcost Window Systems LimitedFinishing trades
- Cordage 11 LimitedProperty developers
- Cordage 20 LimitedProperty developers
- Cordage 25 LimitedProperty developers
- Cordage 26 LimitedProperty developers
- Cordage 36 LimitedProperty developers
- Cordage 4 LimitedProperty developers
- Cordage 41 LimitedProperty developers
- Cordage 44 LimitedProperty developers
- Cordage 9 LimitedProperty developers
- CTT Developments LimitedProperty developers
- Henry Thomas Technical LtdSpecialist contractors
- Prospect Heat Solutions LimitedPlumbers and heating engineers
- Sovereign Plus Contracting LimitedSpecialist contractors
- Sovereign Plus Solutions LimitedSpecialist contractors
- T & J Decorators LimitedFinishing trades
What happens if C45 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 28 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Jun 2027 to 28 Jul 2027 | £150 |
| 1 to 3 months late | 29 Jul 2027 to 28 Sep 2027 | £375 |
| 3 to 6 months late | 29 Sep 2027 to 28 Dec 2027 | £750 |
| More than 6 months late | From 29 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Sep 2027 | £200 |
| 3 months late | 28 Dec 2027 | another £200 |
| 6 months late | 28 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Sep 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
- 10981244
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 September 2017 (9 years ago)
- Registered office
- Unit 6, ST. Georges Square, Portsmouth, Hampshire, PO1 3EY
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 September 2025
- Last confirmation statement
- 28 January 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- MB Services Iw Limited (until 4 Sep 2025)
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 Portsmouth
Other active specialist construction companies registered in Portsmouth.
- Calidad Installations Ltd2013
- Cardinal Integrated Services Ltd2023
- Cavenpark Ltd2012
- CD & PS (Fareham) Limited2015
- City Damp Solutions Ltd2017
- Cladiatorz Limited2022
- Clear Contracting Solutions Limited2025
- Coastal Building Solutions Ltd2025
All specialist construction companies in Portsmouth · All trades in Portsmouth · Specialist contractors across the UK
Frequently asked questions
When are C45 Limited's accounts due?
C45 Limited's next accounts are due at Companies House by 28 June 2027 (in 259 days), covering the period to 28 September 2026.
When is C45 Limited's CT600 due?
The CT600 for the period to 28 September 2026 is due at HMRC by 28 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 June 2027.
Is C45 Limited still trading?
C45 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 C45 Limited do?
C45 Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is C45 Limited?
C45 Limited was incorporated on 26 September 2017, 9 years ago.
What is the penalty if C45 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 C45 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.