- Companies
- Specialist contractors
- Gosport
- QST Construction Services Limited
QST Construction Services Limited
- Company number
- 05270580
- Incorporated
- 27 Oct 200421 years trading
- Registered office
- Unit 6 Clarence Wharf Ind Est, Mumby Road, Gosport, PO12 1AJ
- Nature of business
- Other specialised construction activities n.e.c.
QST Construction Services Limited is a 21-year-old private limited company registered in Gosport, company number 05270580, one of 36 specialist construction companies in Gosport. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 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 £77K (+23.6%) on the year before, to £404K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £1.2M against £224K owed within a year: 5.2 times cover.
- 7 employees on average, up from 0 the year before.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £404K | £200K | £1.2M | £224K | 7 |
| 31 Oct 2023 | £327K | £242K | £888K | £168K | 0 |
| 31 Oct 2022 | £329K | £196K | £754K | £110K | |
| 31 Oct 2021 | £196K | £352K | £788K | £98K | 0 |
| 31 Oct 2020 | £104K | £352K | £755K | £435K | 3 |
| 31 Oct 2019 | £61K | £63K | £443K | £173K | 3 |
| 31 Oct 2018 | £47K | £72K | £409K | £173K | 4 |
| 31 Oct 2017 | £15K | £162K | £361K | £129K | 4 |
| 31 Oct 2016 | £50K | £145K | £652K | £387K | |
| 31 Oct 2015 | £35K | £21K | £255K | £149K |
Public contracts won
QST Construction Services Limited has one public sector contract award on record; the ones with their own published value total £6M (2025). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Southampton City Council | Inspection, Testing & Repair Works to Concrete and Masonry Structures | £6M | 15 Dec 2025 |
Where QST Construction Services Limited is registered
The registered office is in Gosport (PO12), in the Gosport local authority area, South East. Show PO12 1AJ on a map.
Other trade companies in PO12
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- New Horizons (Hampshire) LtdFinishing trades
- Smart Energy Advisers LtdElectricians
- Easy Clean (Southern) LtdCleaning companies
- RHR Energy LtdPlumbers and heating engineers
- Mitchell Tsco LtdCivil engineering
- Lyle Morgans Master Thatcher LtdRoofers
- Pebbles Cleaning Group LtdCleaning companies
What happens if QST Construction Services 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 05270580
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 October 2004 (21 years ago)
- Registered office
- Unit 6 Clarence Wharf Ind Est, Mumby Road, Gosport, PO12 1AJ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 11 August 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- Quality Site Testing Limited (until 21 May 2013)
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 Gosport
Other active specialist construction companies registered in Gosport.
- R.S. Engineering Ltd2015
- Richard’S Construction Services Ltd2025
- S.D. Plastering Limited2002
- Socss Limited2026
- Solent Commercial Management Limited2018
- Solent Wood Burners Ltd2015
- Sucina Limited2014
- Westgarth Construction Limited2021
All specialist construction companies in Gosport · All trades in Gosport · Specialist contractors across the UK
Frequently asked questions
When are QST Construction Services Limited's accounts due?
QST Construction Services Limited's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is QST Construction Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is QST Construction Services Limited still trading?
QST Construction Services 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 QST Construction Services Limited do?
QST Construction Services Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is QST Construction Services Limited?
QST Construction Services Limited was incorporated on 27 October 2004, 21 years ago.
Has QST Construction Services Limited won public sector contracts?
Yes. QST Construction Services Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £6M), most recently from Southampton City Council.
What is the penalty if QST Construction Services 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 QST Construction Services 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.