- Companies
- Civil engineering
- Southampton
- HB Groundworks Limited
HB Groundworks Limited
- Company number
- 10312142
- Incorporated
- 4 Aug 201610 years trading
- Registered office
- 47 Larch Road, Southampton, SO16 5EX
- Nature of business
- Construction of roads and motorways
HB Groundworks Limited is a 10-year-old private limited company registered in Southampton, company number 10312142, one of 114 civil engineering contractors in Southampton. 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 £10K (+82.7%) on the year before, to £23K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £60K against £93K owed within a year: 0.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2017 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2024 | £23K | £3,068 | £60K | £93K | 0 |
| 31 Aug 2023 | £12K | £4,857 | £73K | £116K | 0 |
| 31 Aug 2022 | £26K | £7,292 | £36K | £65K | 0 |
| 31 Aug 2021 | -£30K | £32K | £86K | £86K | 0 |
| 31 Aug 2020 | -£26K | £47K | £22K | 1 | |
| 31 Aug 2019 | £14K | £51K | £19K | 4 | |
| 31 Aug 2018 | £12K | £58K | £47K | ||
| 31 Aug 2017 | £556 | £40K | £23K |
Where HB Groundworks Limited is registered
The registered office is in Southampton (SO16), in the Southampton local authority area, South East. Show SO16 5EX on a map.
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What happens if HB Groundworks Limited 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
- 10312142
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 August 2016 (10 years ago)
- Registered office
- 47 Larch Road, Southampton, SO16 5EX
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2024
- Last confirmation statement
- 3 August 2025
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Southampton
Other active civil engineering contractors registered in Southampton.
- Horton Barns Limited2003
- Hus Corporation Ltd2016
- I&P Construction Ltd2025
- I.M.Currie Formwork Ltd2015
- Iga Signalling Limited2011
- Imperial Traffic Management Ltd2021
- J&G Gibbs Limited2006
- Jab Civils Ltd2026
All civil engineering contractors in Southampton · All trades in Southampton · Civil engineering across the UK
Frequently asked questions
When are HB Groundworks Limited's accounts due?
HB Groundworks Limited's accounts were due at Companies House on 31 August 2026 and the register shows them as overdue.
When is HB Groundworks 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 August 2025, due by 31 August 2026, and one for the period to 30 November 2025, due by 30 November 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is HB Groundworks Limited still trading?
HB Groundworks Limited is listed as active on the Companies House register (checked 12 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 HB Groundworks Limited do?
HB Groundworks Limited is registered under Construction of roads and motorways (SIC 42110).
How old is HB Groundworks Limited?
HB Groundworks Limited was incorporated on 4 August 2016, 10 years ago.
What is the penalty if HB Groundworks 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 HB Groundworks Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.