- Companies
- Specialist contractors
- Rotherham
- 3RS Engineering Limited
3RS Engineering Limited
- Company number
- 12486919
- Incorporated
- 27 Feb 20206 years trading
- Registered office
- Unit 3A Magna 34, Temple Close, Rotherham, S60 1FG
- Nature of business
- Other specialised construction activities n.e.c.
3RS Engineering Limited is a 6-year-old private limited company registered in Rotherham, company number 12486919, one of 122 specialist construction companies in Rotherham. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £207K (+50.9%) on the year before, to £613K.
- Net assets rose in 4 of 4 year-on-year comparisons on record.
- Current assets of £674K against £181K owed within a year: 3.7 times cover.
- 9 employees on average, up from 7 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £613K | £548K | £674K | £181K | 9 |
| 29 Feb 2024 | £406K | £334K | £444K | £202K | 7 |
| 28 Feb 2023 | £280K | £291K | £107K | 4 | |
| 28 Feb 2022 | £151K | £124K | £38K | 4 | |
| 28 Feb 2021 | £26K | £33K | £38K | 3 |
Public contracts won
3RS Engineering Limited has 6 public sector contract awards on record; the ones with their own published value total £578K, from 2023 to 2026. Source: Contracts Finder and Find a Tender award notices. 5 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- City of London Corporation4 awards
- Humber Bridge Board1 award
- Cyngor Gwynedd1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Humber Bridge Board | HBB Roller Shutter Joint (DEMAG) Inspection and Maintenance | £133K | 5 Aug 2026 |
| Cyngor Gwynedd | Pont Dysynni, Tywyn, EJ replacement and Pont Ysguborm, Dolgellau, EJ and Bearing Replacement | £166K | 12 Nov 2025 |
| City of London Corporation | Tower Bridge Pawls Greasing System | £31K | 10 Sep 2024 |
| City of London Corporation | Replacement of the Oil Feed System to the Pinion and Pivot Bearings on Tower Bridge South Tower | £100K | 23 May 2024 |
| City of London Corporation | Replacement of the Oil Feed System to the Pinion and Pivot Bearings on Tower Bridge North Tower | £98K | 23 Nov 2023 |
| City of London Corporation | Repairs to the Pawl bearing plates on Tower Bridge | £49K | 1 May 2023 |
Where 3RS Engineering Limited is registered
The registered office is in Rotherham (S60), in the Rotherham local authority area, Yorkshire and The Humber. Show S60 1FG on a map.
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What happens if 3RS Engineering 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 12486919
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 February 2020 (6 years ago)
- Registered office
- Unit 3A Magna 34, Temple Close, Rotherham, S60 1FG
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 10 July 2026
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 Rotherham
Other active specialist construction companies registered in Rotherham.
- 4More Space Limited2013
- Acorn Damp Proofing Ltd2017
- Afn Industrial Services Limited2021
- Al-Fire Protection and Construction Ltd2024
- Alco Line M.G Ltd2023
- Anglo Liners Ltd2012
- Aps Associates Consulting Engineers Ltd2010
- Aqua Tanks Limited2023
All specialist construction companies in Rotherham · All trades in Rotherham · Specialist contractors across the UK
Frequently asked questions
When are 3RS Engineering Limited's accounts due?
3RS Engineering Limited's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is 3RS Engineering Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is 3RS Engineering Limited still trading?
3RS Engineering 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 3RS Engineering Limited do?
3RS Engineering Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is 3RS Engineering Limited?
3RS Engineering Limited was incorporated on 27 February 2020, 6 years ago.
Has 3RS Engineering Limited won public sector contracts?
Yes. 3RS Engineering Limited has 6 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £578K), most recently from Humber Bridge Board.
What is the penalty if 3RS Engineering 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 3RS Engineering 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.