- Companies
- Plumbers and heating engineers
- Portsmouth
- KGS Mechanical Limited
KGS Mechanical Limited
- Company number
- 09302858
- Incorporated
- 10 Nov 201411 years trading
- Registered office
- Office 4, 8-9 Rodney Road, Portsmouth, PO4 8BF
- Nature of business
- Plumbing, heat and air-conditioning installation
KGS Mechanical Limited is a 11-year-old private limited company registered in Portsmouth, company number 09302858, one of 141 plumbing and heating companies in Portsmouth. Its next accounts are due at Companies House on 30 November 2026, and its first CT600 is due at HMRC on 30 November 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for KGS Mechanical LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £25K (+33.8%) on the year before, to £101K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £113K against £39K owed within a year: 2.9 times cover.
- -5 employees on average, down from 2 the year before.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2024 | £101K | £9,153 | £113K | £39K | -5 |
| 30 Nov 2023 | £75K | £2,886 | £72K | £4,781 | 2 |
| 30 Nov 2022 | £47K | £2,563 | 1 | ||
| 30 Nov 2021 | £27K | £0 | £26K | £7,525 | 1 |
| 30 Nov 2020 | £18K | £1,412 | £16K | £9,682 | 3 |
| 30 Nov 2019 | £8,745 | £17K | 3 | ||
| 30 Nov 2018 | -£27K | £0 | £8,528 | £42K | 3 |
| 30 Nov 2017 | £12K | £2,175 | £11K | £223 | 2 |
| 30 Nov 2016 | £12K | £2,455 | £2,455 | £9,670 | |
| 30 Nov 2015 | £12K | £1,347 | £13K | £2,479 |
Where KGS Mechanical Limited is registered
The registered office is in Portsmouth (PO4), in the Portsmouth local authority area, South East. Show PO4 8BF on a map.
Other trade companies in PO4
- Prestiige LtdMechanics and garages
- Portsea Homes LimitedProperty developers
- Elite Building Services (Portsmouth) LtdBuilders
- G Form Drylining LimitedPlasterers
- Solent Sales Haulage & Storage LtdMotor traders
- Koko Construction LtdBuilders
- Chase RCS LtdCivil engineering
- Proper Job Handyman LtdFinishing trades
Also registered at this address
10 other companies use the same registered office as KGS Mechanical Limited.
- Bedborough Electrics LimitedElectricians
- C.M Interior Solutions LimitedInstallers
- Hi-Tech Cleaning Services South LimitedCleaning companies
- Home Preservation LimitedSpecialist contractors
- Magic Motorhome Man LimitedMechanics and garages
- Oakley Groundworks LimitedProperty developers
- PB Installations LimitedGlaziers
- Radh Interiors LtdInstallers
- Revive Auto Innovations (Portsmouth) LimitedMechanics and garages
- Square Gas LimitedPlumbers and heating engineers
What happens if KGS Mechanical 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 09302858
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 November 2014 (11 years ago)
- Registered office
- Office 4, 8-9 Rodney Road, Portsmouth, PO4 8BF
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 28 November 2025
- Previous names
- KGS Plumbing & Heating Limited (until 30 Nov 2022)
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 Portsmouth
Other active plumbing and heating companies registered in Portsmouth.
- KM Plumbing & Heating Ltd2016
- L.Dubisson Plumbing and Heating Ltd2022
- Lark Project Services Ltd2022
- Lustra Installs Ltd2023
- Lynch Mechanical, Plumbing & Heating Ltd2022
- Major Cooling Ltd2025
- Mark Howe Plumbing & Heating Limited1998
- Mark Kennett Plumbing & Heating Ltd2012
All plumbing and heating companies in Portsmouth · All trades in Portsmouth · Plumbers and heating engineers across the UK
Frequently asked questions
When are KGS Mechanical Limited's accounts due?
KGS Mechanical Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is KGS Mechanical Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 30 November 2025, due by 30 November 2026, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is KGS Mechanical Limited still trading?
KGS Mechanical 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 KGS Mechanical Limited do?
KGS Mechanical Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is KGS Mechanical Limited?
KGS Mechanical Limited was incorporated on 10 November 2014, 11 years ago.
What is the penalty if KGS Mechanical 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 KGS Mechanical 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.