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- B. Williams Installation Services Limited
Company profile · Installers
B. Williams Installation Services Limited
B. Williams Installation Services Limited is a 7-year-old private limited company registered in St Leonards on Sea, company number 12017983, one of the UK's installation companies (insulation, lifts, shutters and similar). Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 May 2026, as filed at Companies House.
B. Williams Installation Services Limited over the years
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 unchanged on the year before, at £1.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £38K against £36K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2020 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £1 | £38K | £36K | 1 | |
| 31 May 2025 | £1 | £73K | £74K | 1 | |
| 31 May 2024 | £9,942 | £86K | £78K | 1 | |
| 31 May 2023 | £9,144 | £81K | £74K | 2 | |
| 31 May 2022 | £3,515 | £60K | £59K | 2 | |
| 31 May 2021 | £2,322 | £45K | £46K | 2 | |
| 31 May 2020 | £1 | £19K | £24K | 2 |
Where B. Williams Installation Services Limited is registered
The registered office is in St Leonards on Sea (TN37), in the Rother local authority area, South East. Show TN37 7NF on a map.
Other trade companies in TN37
- Stephen Ball Civil & Building LimitedProperty developers
- Battle Installation LtdElectricians
- Battle Energy LtdElectricians
- Thornwick Developments LtdProperty developers
- Abcd Plumbing and Heating LimitedPlumbers and heating engineers
- TS Carz LtdMotor traders
- Larkin Rail Group LtdCivil engineering
- Oakmont Building Group LtdProperty developers
Also registered at this address
7 other companies use the same registered office as B. Williams Installation Services Limited.
- Ed's Plastering LtdPlasterers
- LW Installations LimitedInstallers
- Manor Building (S E) LtdFinishing trades
- Merlyn Homes LimitedBuilders
- Neovo LtdFloor and wall tilers
- Samsons Installations LimitedGlaziers
- Taylormade Paving LtdLandscapers and gardeners
What happens if B. Williams Installation 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2029 | 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
- 12017983
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 May 2019 (7 years ago)
- Registered office
- 85, Westfield Lane, St Leonards on Sea, East Sussex, TN37 7NF
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 22 May 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in St Leonards on Sea
Other active installation companies (insulation, lifts, shutters and similar) registered in St Leonards on Sea.
All installation companies (insulation, lifts, shutters and similar) in St Leonards on Sea · All trades in St Leonards on Sea · Installers across the UK
Frequently asked questions
When are B. Williams Installation Services Limited's accounts due?
B. Williams Installation Services Limited's next accounts are due at Companies House by 29 February 2028 (in 505 days), covering the period to 31 May 2027.
When is B. Williams Installation Services Limited's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is B. Williams Installation Services Limited still trading?
B. Williams Installation 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 B. Williams Installation Services Limited do?
B. Williams Installation Services Limited is registered under Other construction installation (SIC 43290).
How old is B. Williams Installation Services Limited?
B. Williams Installation Services Limited was incorporated on 25 May 2019, 7 years ago.
What is the penalty if B. Williams Installation 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 B. Williams Installation 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.