- Companies
- Plumbers and heating engineers
- Ipswich
- Seager Heating Limited
Seager Heating Limited
- Company number
- 03395937
- Incorporated
- 1 Jul 199729 years trading
- Registered office
- 11 Williamsport Way, Lion Barn Industrial Estate, Ipswich, Suffolk, IP6 8RW
- Nature of business
- Plumbing, heat and air-conditioning installation
Seager Heating Limited is a 29-year-old private limited company registered in Ipswich, company number 03395937, one of 130 plumbing and heating companies in Ipswich. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £126K (+8.1%) on the year before, to £1.7M.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- 33 employees on average, up from 31 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 May 2025 | £1.7M | £435K | £712K | 33 | |
| 31 May 2024 | £1.5M | £432K | £539K | 31 | |
| 31 May 2023 | £1.3M | £304K | £692K | 33 | |
| 31 May 2022 | £1.1M | £194K | £575K | 33 | |
| 31 May 2021 | £1.1M | £203K | £460K | 33 | |
| 31 May 2020 | £1M | £239K | £1.2M | £208K | 27 |
| 31 May 2019 | £1M | £85K | £1.4M | £547K | |
| 31 May 2018 | £1.2M | £666K | 37 | ||
| 31 May 2017 | £1.5M | £111K | £413K | 40 | |
| 31 May 2016 | £1.8M | £285K | £2.5M | £1.1M |
Public contracts won
Seager Heating Limited has 6 public sector contract awards on record; the ones with their own published value total £14M, from 2016 to 2025. Source: Contracts Finder and Find a Tender award notices. For 2 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. 5 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Colchester City Council2 awards
- Colchester Borough Council2 awards
- Eastern Procurement Limited1 award
- Kings Lynn & West Norfolk Borough Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Colchester City Council | Kitchen Refurbishments | £10M | 25 Mar 2025 |
| Colchester City Council | GB-Colchester: 0379 - Heating Renewals for Housing Stock | £1M | 30 May 2024 |
| Colchester Borough Council | GB-Colchester: Kitchen Refurbishments | £2.8M | 18 May 2022 |
| Colchester Borough Council | GB-Colchester: Kitchens Modernisations 17 (0135) | £385K | 16 May 2018 |
| Eastern Procurement Limited | Heating Works | Ceiling, not shown | 10 Apr 2018 |
| Kings Lynn & West Norfolk Borough Council | Aids & Adaptions Framework Agreement | Ceiling, not shown | 21 Dec 2016 |
Where Seager Heating Limited is registered
The registered office is in Ipswich (IP6), in the Mid Suffolk local authority area, East of England. Show IP6 8RW on a map.
Other trade companies in IP6
- CDV Thorpe Lodge LimitedProperty developers
- 11:11 Automotive LtdMotor traders
- JS Fire and Intrusion Solutions LtdElectricians
- Lakeview Cars LimitedMotor traders
- LG Contractors LtdCivil engineering
- Concentric Plumbing & Mechanical LtdPlumbers and heating engineers
- CJW Coastal Plumbing and Heating LtdPlumbers and heating engineers
- Ajh Design and Build LtdJoiners and carpenters
What happens if Seager Heating 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 03395937
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 July 1997 (29 years ago)
- Registered office
- 11 Williamsport Way, Lion Barn Industrial Estate, Ipswich, Suffolk, IP6 8RW
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 1 July 2026
- Charges (mortgages)
- 1 outstanding of 4 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 Ipswich
Other active plumbing and heating companies registered in Ipswich.
- Seal Plumbing & Heating Ltd2026
- Showroom Plumbing & Heating Ltd2019
- Silver Greentech Air Systems Ltd2020
- Size Plumbing & Heating Limited2011
- Smart Aim Solutions Limited2017
- Sonesta Limited2014
- Southgate & Culham Limited2005
- Spear Plumbing Ltd2014
All plumbing and heating companies in Ipswich · All trades in Ipswich · Plumbers and heating engineers across the UK
Frequently asked questions
When are Seager Heating Limited's accounts due?
Seager Heating Limited's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Seager Heating Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Seager Heating Limited still trading?
Seager Heating 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 Seager Heating Limited do?
Seager Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Seager Heating Limited?
Seager Heating Limited was incorporated on 1 July 1997, 29 years ago.
Has Seager Heating Limited won public sector contracts?
Yes. Seager Heating Limited has 6 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £14M), most recently from Colchester City Council.
What is the penalty if Seager Heating 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 Seager Heating 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.