- Companies
- Plumbers and heating engineers
- Gillingham
- Jag Mechanical Building Services Limited
Jag Mechanical Building Services Limited
- Company number
- 10920186
- Incorporated
- 17 Aug 20179 years trading
- Registered office
- 69 South Avenue, Gillingham, ME8 6EE
- Nature of business
- Plumbing, heat and air-conditioning installation
Jag Mechanical Building Services Limited is a 9-year-old private limited company registered in Gillingham, company number 10920186, one of 92 plumbing and heating companies in Gillingham. 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 up £15K (+1.6%) on the year before, to £926K.
- Net assets rose in 6 of 7 year-on-year comparisons on record.
- Current assets of £1M against £154K owed within a year: 6.8 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £926K | £457K | £1M | £154K | 2 |
| 31 Aug 2024 | £911K | £1M | £1.3M | £390K | 1 |
| 31 Aug 2023 | £217K | £160K | £278K | £126K | 2 |
| 31 Aug 2022 | £122K | £206K | £103K | 2 | |
| 31 Aug 2021 | £65K | £150K | £92K | 2 | |
| 31 Aug 2020 | £125K | £219K | £103K | 2 | |
| 31 Aug 2019 | £75K | £128K | £160K | £86K | |
| 31 Aug 2018 | £49K | £24K | £116K | £69K | 2 |
Where Jag Mechanical Building Services Limited is registered
The registered office is in Gillingham (ME8), in the Medway local authority area, South East. Show ME8 6EE on a map.
Other trade companies in ME8
- National Fire Services LimitedElectricians
- TC Mechanical Engineering LtdMechanics and garages
- Reset and Refresh Kent LtdCleaning companies
- Primestone Surfacing LtdCivil engineering
- GMS Autos LtdMechanics and garages
- Mmu Design & Build LtdFinishing trades
- Jpe Drylining LtdPlasterers
- Quick Clean Kent LtdCleaning companies
What happens if Jag Mechanical Building 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
- 10920186
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 August 2017 (9 years ago)
- Registered office
- 69 South Avenue, Gillingham, ME8 6EE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 7 October 2025
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 Gillingham
Other active plumbing and heating companies registered in Gillingham.
- JL Duct Limited2021
- JNM Heating&Plumbing Ltd2024
- Jpe Building Refurbishments Limited2020
- Jpe Heating Limited2017
- JRC Plumbing and Heating Ltd2025
- K&J Plumbing and Bathrooms Ltd2025
- KBM Services (Kent) Limited2022
- Kent Elite Gas Services Ltd2011
All plumbing and heating companies in Gillingham · All trades in Gillingham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Jag Mechanical Building Services Limited's accounts due?
Jag Mechanical Building 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 Jag Mechanical Building 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 Jag Mechanical Building Services Limited still trading?
Jag Mechanical Building 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 Jag Mechanical Building Services Limited do?
Jag Mechanical Building Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Jag Mechanical Building Services Limited?
Jag Mechanical Building Services Limited was incorporated on 17 August 2017, 9 years ago.
What is the penalty if Jag Mechanical Building 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 Jag Mechanical Building 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.