- Companies
- Plumbers and heating engineers
- Northampton
- Autumn Mechanical Services Limited
Autumn Mechanical Services Limited
- Company number
- 03407486
- Incorporated
- 23 Jul 199729 years trading
- Registered office
- 10 Cotton End, Northampton, NN4 8BS
- Nature of business
- Plumbing, heat and air-conditioning installation
Autumn Mechanical Services Limited is a 29-year-old private limited company registered in Northampton, company number 03407486, one of 197 plumbing and heating companies in Northampton. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £29K (-40.5%) on the year before, to £42K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £315K against £290K owed within a year: 1.1 times cover.
- 9 employees on average, up from 8 the year before.
- 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 Aug 2025 | £42K | £315K | £290K | 9 | |
| 31 Aug 2024 | £71K | £130K | £66K | 8 | |
| 31 Aug 2023 | £151K | £257K | £102K | 7 | |
| 31 Aug 2022 | £180K | £355K | £160K | 6 | |
| 31 Aug 2021 | £130K | £248K | £92K | 6 | |
| 31 Aug 2020 | £37K | £139K | £65K | 6 | |
| 31 Aug 2019 | £28K | £61K | £46K | 8 | |
| 31 Aug 2018 | £20K | £68K | £61K | ||
| 31 Aug 2017 | £7,167 | £1,253 | £239K | £246K | |
| 31 Aug 2016 | -£27K | £1,253 | £226K | £270K |
Public contracts won
Autumn Mechanical Services Limited has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all 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.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| North Northamptonshire Council | North Northamptonshire Council Replacement of Croyland School Boilers RFQ | Ceiling, not shown | 24 Mar 2026 |
Where Autumn Mechanical Services Limited is registered
The registered office is in Northampton (NN4), in the West Northamptonshire local authority area, East Midlands. Show NN4 8BS on a map.
Other trade companies in NN4
- Marks Performance LtdMotor traders
- Midlands Lifting Services LtdSpecialist contractors
- Collingtree Group LtdBuilders
- Lab Electrical Solutions LtdElectricians
- BM Automotive Group LtdMechanics and garages
- Keenan Rentals LtdProperty developers
- Collingtree Cool LtdPlumbers and heating engineers
- Je Brickwork LtdBuilders
What happens if Autumn Mechanical 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 03407486
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 July 1997 (29 years ago)
- Registered office
- 10 Cotton End, Northampton, NN4 8BS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 26 June 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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 Northampton
Other active plumbing and heating companies registered in Northampton.
- Az Plumbing & Heating Northampton Ltd2023
- Azure Plumbing & Heating Ltd2005
- B.B. Gas & Plumbing Ltd2020
- Barton Heating and Plumbing Ltd2017
- Bergfix Solutions Ltd2025
- Betafix Plumbing and Heating Ltd Ltd2020
- Billings Plumbing and Heating Ltd2023
- Blakemore Management Limited2026
All plumbing and heating companies in Northampton · All trades in Northampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Autumn Mechanical Services Limited's accounts due?
Autumn Mechanical Services Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Autumn Mechanical Services Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Autumn Mechanical Services Limited still trading?
Autumn Mechanical 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 Autumn Mechanical Services Limited do?
Autumn Mechanical Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Autumn Mechanical Services Limited?
Autumn Mechanical Services Limited was incorporated on 23 July 1997, 29 years ago.
Has Autumn Mechanical Services Limited won public sector contracts?
Yes. Autumn Mechanical Services Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from North Northamptonshire Council.
What is the penalty if Autumn Mechanical 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 Autumn Mechanical 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.