- Companies
- Property developers
- Northampton
- Sidner Capital Ltd
Sidner Capital Ltd
- Company number
- 14234983
- Incorporated
- 14 Jul 20224 years trading
- Registered office
- 221 Wellingborough Road, Northampton, NN1 4EF
- Nature of business
- Development of building projects
Sidner Capital Ltd is a 4-year-old private limited company registered in Northampton, company number 14234983, one of 390 property development companies in Northampton. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 2027.
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 Sidner Capital 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.
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 £266K (-44.9%) on the year before, to -£858K.
- Current assets of £1,220 against £859K owed within a year: 0.0 times cover.
- 1 employee on average, up from 0 the year before.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£858K | £1,220 | £859K | 1 | |
| 31 Jul 2024 | -£592K | £370 | £42K | £634K | 0 |
| 31 Jul 2023 | -£100K | £101K | 0 |
Where Sidner Capital Ltd is registered
The registered office is in Northampton (NN1), in the West Northamptonshire local authority area, East Midlands. Show NN1 4EF on a map.
Other trade companies in NN1
- Triple Aaa Holdings LtdPainters and decorators
- Cosy Dove+ LimitedBuilders
- Remedy Property Services LtdSpecialist contractors
- Deezi LtdJoiners and carpenters
- Setup Phone LtdRepair services
- Macmarlloe LtdPlumbers and heating engineers
- Robertconstructor LtdBuilders
- DSB Ground Works LtdBuilders
Also registered at this address
3 other companies use the same registered office as Sidner Capital Ltd.
- KKL Group LimitedBuilders
- Nineteenbs LimitedProperty developers
- Sidner CBS LimitedBuilders
What happens if Sidner Capital 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 14234983
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2022 (4 years ago)
- Registered office
- 221 Wellingborough Road, Northampton, NN1 4EF
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 28 September 2025
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Northampton
Other active property development companies registered in Northampton.
- Simon Jones GPM Ltd2021
- SK Corex Ltd2026
- SM Developments Limited2002
- SMH Homes Limited2023
- Sonofoss Design System Limited1986
- Space 24 Ltd2024
- SPB Property Solutions Ltd2026
- Spencer House Properties Limited1975
All property development companies in Northampton · All trades in Northampton · Property developers across the UK
Frequently asked questions
When are Sidner Capital Ltd's accounts due?
Sidner Capital Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Sidner Capital Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Sidner Capital Ltd still trading?
Sidner Capital 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 Sidner Capital Ltd do?
Sidner Capital Ltd is registered under Development of building projects (SIC 41100).
How old is Sidner Capital Ltd?
Sidner Capital Ltd was incorporated on 14 July 2022, 4 years ago.
What is the penalty if Sidner Capital 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 Sidner Capital 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.