- Companies
- Civil engineering
- Bedford
- S.D.G. Electrical and Mechanical Engineering Limited
S.D.G. Electrical and Mechanical Engineering Limited
- Company number
- 02863579
- Incorporated
- 19 Oct 199332 years trading
- Registered office
- Unit 23 Sergeants Way, Elms Industrial Estate, Bedford, Bedfordshire, MK41 0EH
- Nature of business
- Construction of utility projects for electricity and telecommunications
S.D.G. Electrical and Mechanical Engineering Limited is a 32-year-old private limited company registered in Bedford, company number 02863579, one of 61 civil engineering contractors in Bedford. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £75K (+9.7%) on the year before, to £844K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £1.1M against £318K owed within a year: 3.5 times cover.
- 24 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 |
|---|---|---|---|---|---|
| 31 Dec 2025 | £844K | £627K | £1.1M | £318K | 24 |
| 31 Dec 2024 | £769K | £651K | £1M | £286K | 24 |
| 31 Dec 2023 | £717K | £465K | £837K | £174K | 23 |
| 31 Dec 2022 | £700K | £592K | £896K | £251K | 23 |
| 31 Dec 2021 | £532K | £353K | £774K | £324K | 23 |
| 31 Dec 2020 | £315K | £122K | £502K | £242K | 22 |
| 31 Dec 2019 | £351K | £133K | £545K | £250K | 23 |
| 31 Dec 2018 | £330K | £156K | £507K | £218K | 19 |
| 31 Dec 2017 | £361K | £246K | £456K | £147K | 19 |
| 31 Dec 2016 | £363K | £203K | £736K | £407K | 17 |
Public contracts won
S.D.G. Electrical and Mechanical Engineering Limited has 18 public sector contract awards on record; the ones with their own published value total £2.8M, from 2015 to 2026. Source: Contracts Finder and Find a Tender award notices. For 3 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- London Borough of Ealing6 awards
- Central Bedfordshire Council4 awards
- Milton Keynes City Council3 awards
- Milton Keynes Council3 awards
- Luton Borough Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Milton Keynes City Council | Summerfield School Full Plant Room Heating and Distribution Upgrade | £323K | 31 May 2026 |
| Milton Keynes City Council | The Willows School Full Heating and Distribution Upgrade | £363K | 8 May 2026 |
| Milton Keynes City Council | Long Meadow School and Broughton Fields School Boiler Replacement | 26 Aug 2025 | |
| Luton Borough Council | Luton Council FTS Open Tender Framework procurement for Mechanical Services Support: Domestic Gas Servicing and Associated Work, Domestic Boiler Replacement and Associated Work, Communal Boiler Servicing; Maintenance and Mechanical, Water Treatment Services and Associated Works. | Ceiling, not shown | 31 Mar 2023 |
| Bedford Borough Council | Brookside Care Home - Carbon Reduction Scheme - AWARD | £220K | 10 Mar 2023 |
| London Borough of Ealing | EC1378 Coston Primary School | £259K | 19 Jun 2020 |
| London Borough of Ealing | EC1368 Coston Primary School | £18K | 16 Mar 2020 |
| London Borough of Ealing | EC1307 - Coston Primary School | £40K | 24 Jun 2019 |
| London Borough of Ealing | EC 1306 Blair Peach Primary School | £198K | 8 May 2019 |
| Central Bedfordshire Council | CBC-0957-T-CE Facilities Management of Non-domestic Assets (Corporate Landlord Services) - AWARD | Ceiling, not shown | 5 Mar 2019 |
Showing the 10 most recent of 18.
Where S.D.G. Electrical and Mechanical Engineering Limited is registered
The registered office is in Bedford (MK41), in the Bedford local authority area, East of England. Show MK41 0EH on a map.
Other trade companies in MK41
- Poothrubuildings LtdProperty developers
- Great Ouse Plumbing & Heating LtdPlumbers and heating engineers
- Novaro Finishes LimitedPainters and decorators
- Bedford Motor Group LtdMotor traders
- LWM Recovery and Storage LtdMotor traders
- Barrett Property Services LtdFinishing trades
- Doers Nation LimitedCleaning companies
- Pcebs LtdElectricians
What happens if S.D.G. Electrical and Mechanical 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 02863579
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 October 1993 (32 years ago)
- Registered office
- Unit 23 Sergeants Way, Elms Industrial Estate, Bedford, Bedfordshire, MK41 0EH
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 14 February 2026
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 Bedford
Other active civil engineering contractors registered in Bedford.
- SCS Bedford Limited2018
- Studio Booth Ltd2020
- Tbase Consultancy Ltd2020
- Telron Events Ltd2026
- TKR Consultancy Ltd2011
- Tsteelewaterservices Ltd2026
- Vali N Hincu Construction Limited2020
- WMM 90 Limited2026
All civil engineering contractors in Bedford · All trades in Bedford · Civil engineering across the UK
Frequently asked questions
When are S.D.G. Electrical and Mechanical Engineering Limited's accounts due?
S.D.G. Electrical and Mechanical Engineering Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is S.D.G. Electrical and Mechanical Engineering Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is S.D.G. Electrical and Mechanical Engineering Limited still trading?
S.D.G. Electrical and Mechanical 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 S.D.G. Electrical and Mechanical Engineering Limited do?
S.D.G. Electrical and Mechanical Engineering Limited is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is S.D.G. Electrical and Mechanical Engineering Limited?
S.D.G. Electrical and Mechanical Engineering Limited was incorporated on 19 October 1993, 32 years ago.
Has S.D.G. Electrical and Mechanical Engineering Limited won public sector contracts?
Yes. S.D.G. Electrical and Mechanical Engineering Limited has 18 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £2.8M), most recently from Milton Keynes City Council.
What is the penalty if S.D.G. Electrical and Mechanical 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 S.D.G. Electrical and Mechanical 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.