- Companies
- Installers
- Sheffield
- Underground Construction Services Limited
Company profile · Installers
Underground Construction Services Limited
Underground Construction Services Limited is a 26-year-old private limited company registered in Sheffield, company number 03945769, one of 175 installation companies (insulation, lifts, shutters and similar) in Sheffield. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Underground Construction Services LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Financial snapshot, 2025
From the balance sheet at 30 April 2025, as filed at Companies House.
Underground Construction Services Limited over the years
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 £44K (+107.9%) on the year before, to £86K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £118K against £57K owed within a year: 2.1 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £86K | £115K | £118K | £57K | 2 |
| 30 Apr 2024 | £41K | £53K | £60K | £50K | 2 |
| 30 Apr 2023 | £38K | £26K | £46K | £34K | 2 |
| 30 Apr 2022 | £23K | £4,297 | £38K | £41K | 2 |
| 30 Apr 2021 | £29K | £35K | £75K | £50K | 2 |
| 30 Apr 2020 | £15K | £20K | £26K | £36K | 2 |
| 30 Apr 2019 | £7,093 | £35K | £35K | £47K | 2 |
| 30 Apr 2018 | £865 | £28K | £30K | £45K | 2 |
| 30 Apr 2017 | £507 | £27K | £33K | £44K | 1 |
| 30 Apr 2016 | £306 | £29K | 1 |
Where Underground Construction Services Limited is registered
The registered office is in Sheffield (S11), in the Sheffield local authority area, Yorkshire and The Humber. Show S11 8YZ on a map.
Other trade companies in S11
- Annily Property Services LtdFacilities management
- Hause Detailing LimitedMechanics and garages
- Rain Safe Roofing LimitedRoofers
- P Valeria Construction LimitedJoiners and carpenters
- H Estate Development LtdProperty developers
- 11:11 Electrical & Maintenance Services LtdElectricians
- Mog3Wheeler LtdMotor traders
- The MG & Triumph Parts Company LtdMotor traders
Shared registered office
28 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Underground 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 03945769
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 March 2000 (26 years ago)
- Registered office
- 5 Westbrook Court, Sharrowvale Road, Sheffield, S11 8YZ
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 13 March 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 Sheffield
Other active installation companies (insulation, lifts, shutters and similar) registered in Sheffield.
- Up Rite Partitions (Developments) Limited2007
- Upton Interiors Limited2023
- VMG Groundworks & Construction Ltd2023
- W Lovely and Sons Ltd2026
- Waddington Building Services Limited2015
- Walker Build Ltd2020
- Wallscapes Limited2022
- Wardfix Ltd2024
All installation companies (insulation, lifts, shutters and similar) in Sheffield · All trades in Sheffield · Installers across the UK
Frequently asked questions
When are Underground Construction Services Limited's accounts due?
Underground Construction Services Limited's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Underground Construction Services Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Underground Construction Services Limited still trading?
Underground 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 Underground Construction Services Limited do?
Underground Construction Services Limited is registered under Other construction installation (SIC 43290).
How old is Underground Construction Services Limited?
Underground Construction Services Limited was incorporated on 13 March 2000, 26 years ago.
What is the penalty if Underground 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 Underground 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.