- Company number
- SC481569
- Incorporated
- 7 Jul 201412 years trading
- Registered office
- PO Box 24238, SC481569 - Companies House Default Address, Edinburgh, EH7 9HR
- Nature of business
- Construction of commercial buildings
SPK One Limited is a 12-year-old private limited company registered in Edinburgh, company number SC481569, one of 231 building contractors in Edinburgh. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £1,338 (+3.4%) on the year before, to £41K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £52K against £12K owed within a year: 4.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £41K | £52K | £12K | 1 | |
| 31 Oct 2024 | £39K | £49K | £9,335 | 1 | |
| 31 Oct 2023 | £30K | £55K | £25K | 1 | |
| 31 Oct 2022 | £34K | £43K | £9,120 | 1 | |
| 31 Oct 2021 | £24K | £30K | £6,038 | 1 | |
| 31 Oct 2020 | £15K | £1,983 | £13K | 1 | |
| 31 Oct 2019 | £12K | £803 | £9,812 | £1,961 | 1 |
| 31 Oct 2018 | -£1,757 | -£9,984 | £8,227 | ||
| 31 Oct 2017 | £1,178 | £1 | £6,715 | £5,537 | |
| 31 Oct 2016 | £393 | £1 | £4,502 | £4,109 |
Where SPK One Limited is registered
The registered office is in Edinburgh (EH7), in the City of Edinburgh local authority area, Scotland. Show EH7 9HR on a map.
Other trade companies in EH7
- TRK Construct LimitedBuilders
- Freedom Facilities Management Company LtdFacilities management
- East Claremont Electrical and Developments LimitedBuilders
- Altisfm LtdFacilities management
- Around the Clock Cleaning LtdCleaning companies
- Unity Multi Services LtdPainters and decorators
- CR One Point Solutions LtdMotor traders
- Northstone Roofing LtdRoofers
What happens if SPK One 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- SC481569
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 July 2014 (12 years ago)
- Registered office
- PO Box 24238, SC481569 - Companies House Default Address, Edinburgh, EH7 9HR
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 24 July 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Edinburgh
Other active building contractors registered in Edinburgh.
- SSPM Calton Homes Ltd.1997
- Steiger & Ross Ltd2025
- Strathcarron Developments Limited2010
- Stratus Builders Ltd2026
- Swisscot Asset Solutions Limited2020
- T&O Edinburgh Tiling Ltd2022
- T.B. Williamson & Son, Limited1958
- The Food Kompany Ltd2026
All building contractors in Edinburgh · All trades in Edinburgh · Builders across the UK
Frequently asked questions
When are SPK One Limited's accounts due?
SPK One Limited's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is SPK One Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is SPK One Limited still trading?
SPK One 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 SPK One Limited do?
SPK One Limited is registered under Construction of commercial buildings (SIC 41201).
How old is SPK One Limited?
SPK One Limited was incorporated on 7 July 2014, 12 years ago.
What is the penalty if SPK One 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 SPK One 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.