- Companies
- Machinery repair and installation
- B J Williamson Ltd
Company profile · Machinery repair and installation
B J Williamson Ltd
B J Williamson Ltd is a 3-year-old private limited company registered in Whalsay, company number SC761303, one of the UK's machinery repair and installation companies. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 B J Williamson LtdOr 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.
Financial snapshot, 2026
From the balance sheet at 31 March 2026, as filed at Companies House.
B J Williamson Ltd 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 up £6,616 (+47.6%) on the year before, to £21K.
- Current assets of £12K against £16K owed within a year: 0.7 times cover.
- 3 employees on average, up from 2 the year before.
- Balance sheets on record for 3 years, 2024 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £21K | £12K | £16K | 3 | |
| 31 Mar 2025 | £14K | £15K | £22K | 2 | |
| 31 Mar 2024 | £12K | £14K | £11K | 1 |
Where B J Williamson Ltd is registered
The registered office is in Whalsay (ZE2), in the Shetland Islands local authority area, Scotland. Show ZE2 9AB on a map.
Other trade companies in ZE2
- T.Johnson Contracts LtdBuilders
- I&A Groundworks LtdLandscapers and gardeners
- Stavaness Marine Services LtdMachinery repair and installation
- Deep North LtdCivil engineering
- Gary Christie Construction LtdBuilders
- Theo Irvine Joinery LtdJoiners and carpenters
- JDF Electrical (Shetland) LtdElectricians
- R&S Shetland LtdBuilders
What happens if B J Williamson 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC761303
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 March 2023 (3 years ago)
- Registered office
- Kambr Gardentown, Symbister, Whalsay, Shetland, ZE2 9AB
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
Joinery installation (SIC 43320) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 6 March 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies
Other active machinery repair and installation companies.
- DS Mechanical Solutions Ltd2023
- Stirling Bike Surgery Ltd2023
- NWD Electrical Services Limited2023
- W&F Services Ltd2023
- 1ST Plant and Tool Services Ltd2023
- Rossco Plant Services Ltd2023
- LD Rope Access Ltd2023
- MGW Mechanical Services Ltd2023
Machinery repair and installation across the UK
Frequently asked questions
When are B J Williamson Ltd's accounts due?
B J Williamson Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is B J Williamson Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is B J Williamson Ltd still trading?
B J Williamson 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 B J Williamson Ltd do?
B J Williamson Ltd is registered under Repair and maintenance of ships and boats (SIC 33150); Joinery installation (SIC 43320).
How old is B J Williamson Ltd?
B J Williamson Ltd was incorporated on 7 March 2023, 3 years ago.
What is the penalty if B J Williamson 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 B J Williamson 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.