- Companies
- Plumbers and heating engineers
- BSW Building Services Ltd
BSW Building Services Ltd
- Company number
- 01637144
- Incorporated
- 21 May 198244 years trading
- Registered office
- Rock Lodge Vineyard, Scaynes Hill, West Sussex, RH17 7NG
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation
BSW Building Services Ltd is a 44-year-old private limited company registered in West Sussex, company number 01637144, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £371K (+20.9%) on the year before, to £2.1M.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- Current assets of £2.1M against £750K owed within a year: 2.8 times cover.
- 34 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £2.1M | £593K | £2.1M | £750K | 34 |
| 30 Apr 2024 | £1.8M | £806K | £1.3M | £618K | 34 |
| 30 Apr 2023 | £1.7M | £549K | £1M | £451K | 36 |
| 30 Apr 2022 | £1.5M | £809K | £1.5M | £974K | 37 |
| 30 Apr 2021 | £776K | £91K | £1.3M | £749K | 31 |
| 30 Apr 2020 | £125K | £75K | £340K | £414K | 29 |
Public contracts won
BSW Building Services Ltd has 9 public sector contract awards on record; the ones with their own published value total £1.9M, from 2015 to 2024. Source: Contracts Finder and Find a Tender award notices. For 5 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. 6 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- South East Consortium2 awards
- Espo1 award
- UK Research & Innovation1 award
- Guildford Borough Council1 award
- Optivo1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| South East Consortium | SEC Heating and Water Hygiene Framework | Ceiling, not shown | 9 Jan 2024 |
| South East Consortium | SEC Heating and Water Hygiene Framework | Ceiling, not shown | 18 Dec 2023 |
| Espo | 2838_23 Renewable Energy Solutions | Ceiling, not shown | 17 Nov 2023 |
| UK Research & Innovation | UKRI-4620 Asbestos Removal Services | Ceiling, not shown | 31 Aug 2023 |
| Guildford Borough Council | GBC - Maintenance and Repair of Domestic Air Source Heat Pump Systems (ASHP) and Design, Supply and Installation of New Systems | £1.7M | 19 May 2021 |
| Optivo | Fire Damaged Properties in Poppyfield | £135K | 7 Feb 2019 |
| SE Shared Services | GBC BH Design, Supply and Installation of Domestic Air Source Heat Pump Systems - Award | 28 Aug 2017 | |
| Northern Housing Consortium Ltd | Framework Agreement for Heating Systems | Ceiling, not shown | 31 Mar 2016 |
| Amicushorizon Limited | Refurbishment works, St Leonards on Sea | £35K | 6 Aug 2015 |
Where BSW Building Services Ltd is registered
The registered office is in West Sussex (RH17), in the Mid Sussex local authority area, South East. Show RH17 7NG on a map.
Other trade companies in RH17
- Chequers Heritage LtdProperty developers
- Os Probuild Renovation Group LtdBuilders
- Bse Property Holdings LimitedProperty developers
- Barkers Garage (Cuckfield) LtdMechanics and garages
- Measured Home LimitedBuilders
- Fairfax Radlett LimitedBuilders
- Fox Electrical Contractors LtdElectricians
- Vehicle Workshop LtdMechanics and garages
What happens if BSW 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 01637144
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 May 1982 (44 years ago)
- Registered office
- Rock Lodge Vineyard, Scaynes Hill, West Sussex, RH17 7NG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290) - Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 26 September 2026
- Charges (mortgages)
- 3 outstanding of 3 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
Other active plumbing and heating companies.
Frequently asked questions
When are BSW Building Services Ltd's accounts due?
BSW Building Services Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is BSW Building Services Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is BSW Building Services Ltd still trading?
BSW Building Services Ltd is listed as active on the Companies House register (checked 13 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 BSW Building Services Ltd do?
BSW Building Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290).
How old is BSW Building Services Ltd?
BSW Building Services Ltd was incorporated on 21 May 1982, 44 years ago.
Has BSW Building Services Ltd won public sector contracts?
Yes. BSW Building Services Ltd has 9 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £1.9M), most recently from South East Consortium.
What is the penalty if BSW 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 BSW Building Services Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.