- Companies
- Plumbers and heating engineers
- Market Harborough
- Mos Building Services Ltd
Mos Building Services Ltd
- Company number
- 10472450
- Incorporated
- 10 Nov 20169 years trading
- Registered office
- C/O Mayfield & Co 6 Harborough Innovation Centre, Airfield Business Park, Market Harborough, LE16 7WB
- Nature of business
- Plumbing, heat and air-conditioning installation
Mos Building Services Ltd is a 9-year-old private limited company registered in Market Harborough, company number 10472450, one of 19 plumbing and heating companies in Market Harborough. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £3,488 (-23.5%) on the year before, to £11K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £70K against £62K owed within a year: 1.1 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £11K | £70K | £62K | 0 | |
| 30 Nov 2024 | £15K | £81K | £65K | 1 | |
| 30 Nov 2023 | £215 | £79K | £65K | 1 | |
| 30 Nov 2022 | £29K | £111K | £59K | 1 | |
| 30 Nov 2021 | £22K | £134K | £79K | 1 | |
| 30 Nov 2020 | £107 | £122K | £76K | 1 | |
| 30 Nov 2019 | £401 | £80K | £72K | 1 | |
| 30 Nov 2018 | £3,225 | £126K | £94K | ||
| 30 Nov 2017 | £3,906 | £25K | £19K |
Where Mos Building Services Ltd is registered
The registered office is in Market Harborough (LE16), in the Harborough local authority area, East Midlands. Show LE16 7WB on a map.
Other trade companies in LE16
- LM Roofing & Ridgeline LtdRoofers
- Mayfil Motor Group LtdMotor traders
- Goldcrest Plumbing LtdPlumbers and heating engineers
- Woodlands L&P LimitedProperty developers
- M.T. Roofing and Building LtdRoofers
- WM Roofing and Guttering LtdRoofers
- Purespace Solutions LtdCleaning companies
- Sudera Group LimitedProperty developers
Also registered at this address
1 other company uses the same registered office as Mos Building Services Ltd.
- Natural Structures LimitedBuilders
What happens if Mos Building 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 10472450
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 November 2016 (9 years ago)
- Registered office
- C/O Mayfield & Co 6 Harborough Innovation Centre, Airfield Business Park, Market Harborough, LE16 7WB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 9 November 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 Market Harborough
Other active plumbing and heating companies registered in Market Harborough.
- Nutcombe Cambridge Limited2009
- Proton Engineering Services Ltd2022
- Reads Plumbing & Heating Ltd2014
- Sandhu Premier Plumbing & Heating Ltd2026
- Stanley Plumbing Services Ltd2011
- Triac Air Conditioning Limited1992
- V-Heat Ltd2021
- Weston Oil Heating Services Ltd2019
All plumbing and heating companies in Market Harborough · All trades in Market Harborough · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mos Building Services Ltd's accounts due?
Mos Building Services Ltd's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Mos Building Services Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Mos Building Services Ltd still trading?
Mos Building 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 Mos Building Services Ltd do?
Mos Building Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mos Building Services Ltd?
Mos Building Services Ltd was incorporated on 10 November 2016, 9 years ago.
What is the penalty if Mos Building 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 Mos Building 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.