- Companies
- Plumbers and heating engineers
- Colchester
- SDF Mechanical Services Ltd
SDF Mechanical Services Ltd
- Company number
- 12535841
- Incorporated
- 26 Mar 20206 years trading
- Registered office
- 1 the Courtyard, Balls Farm Tye Road, Elmstead Market, Colchester, Essex, CO7 7BB
- Nature of business
- Plumbing, heat and air-conditioning installation
SDF Mechanical Services Ltd is a 6-year-old private limited company registered in Colchester, company number 12535841, one of 211 plumbing and heating companies in Colchester. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 down £14K (-13.4%) on the year before, to £91K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £109K against £43K owed within a year: 2.5 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 6 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £91K | £109K | £43K | 2 | |
| 31 Mar 2025 | £106K | £100K | £36K | 1 | |
| 31 Mar 2024 | £96K | £115K | £48K | 1 | |
| 31 Mar 2023 | £73K | £88K | £25K | 1 | |
| 31 Mar 2022 | £35K | £50K | £21K | 1 | |
| 31 Mar 2021 | £28K | £34K | £16K | 1 |
Where SDF Mechanical Services Ltd is registered
The registered office is in Colchester (CO7), in the Tendring local authority area, East of England. Show CO7 7BB on a map.
Other trade companies in CO7
- Apex Tuning LtdMechanics and garages
- MD Proprety Investments LtdProperty developers
- Fine and Classic Cars LimitedMotor traders
- Eco Volt Solutions LimitedElectricians
- Veritas Vale LtdMechanics and garages
- Cube Installations Essex LtdPlumbers and heating engineers
- Cube Installations H&C LtdPlumbers and heating engineers
- Page Arc - Christchurch LimitedMechanics and garages
Also registered at this address
2 other companies use the same registered office as SDF Mechanical Services Ltd.
- Glow Bathrooms LtdPlumbers and heating engineers
- JPB Brickwork LtdProperty developers
What happens if SDF Mechanical Services Ltd 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 12535841
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 March 2020 (6 years ago)
- Registered office
- 1 the Courtyard, Balls Farm Tye Road, Elmstead Market, Colchester, Essex, CO7 7BB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 25 March 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Colchester
Other active plumbing and heating companies registered in Colchester.
- Set Fair (Servicing) Ltd2013
- SML Gas Ltd2020
- Snowdon Gas & Heating Services Ltd2009
- Solus Plumbing & Heating Limited2021
- SP Plumbing & Bathrooms Ltd2021
- Stanway Plumbing Heating & Gas Services Ltd2020
- Stap Plumbing Ltd2022
- Stratos Services Ltd2025
All plumbing and heating companies in Colchester · All trades in Colchester · Plumbers and heating engineers across the UK
Frequently asked questions
When are SDF Mechanical Services Ltd's accounts due?
SDF Mechanical Services Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is SDF Mechanical Services Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is SDF Mechanical Services Ltd still trading?
SDF Mechanical Services Ltd 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 SDF Mechanical Services Ltd do?
SDF Mechanical Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is SDF Mechanical Services Ltd?
SDF Mechanical Services Ltd was incorporated on 26 March 2020, 6 years ago.
What is the penalty if SDF Mechanical Services Ltd 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 SDF Mechanical Services Ltd 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.