Kadox Ltd
- Company number
- 16884763
- Incorporated
- 1 Dec 2025
- Registered office
- 886 Old Kent Road, Peckham, SE15 1NQ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Buying and selling of own real estate; Other letting and operating of own or leased real estate
Kadox Ltd is a newly incorporated private limited company registered in Peckham, company number 16884763, one of the UK's building contractors. Its next accounts are due at Companies House on 1 September 2027, and its first CT600 is due at HMRC on 30 November 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
File the first 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 Kadox 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.
Where Kadox Ltd is registered
The registered office is in Peckham (SE15), in the Southwark local authority area, London. Show SE15 1NQ on a map.
Other trade companies in SE15
- Solmay Services LtdCleaning companies
- Max Lee Robinsons Property Services LtdPlumbers and heating engineers
- Aaluxe Cleaning LimitedCleaning companies
- Bronzewood Environmental Services LimitedFinishing trades
- Bashfield Facilities LtdCleaning companies
- Parcel Works Development LimitedProperty developers
- BSF Building Services LtdElectricians
- Pro Decor London LtdBuilders
What happens if Kadox 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 1 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Sep 2027 to 1 Oct 2027 | £150 |
| 1 to 3 months late | 2 Oct 2027 to 1 Dec 2027 | £375 |
| 3 to 6 months late | 2 Dec 2027 to 1 Mar 2028 | £750 |
| More than 6 months late | From 2 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16884763
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 December 2025
- Registered office
- 886 Old Kent Road, Peckham, SE15 1NQ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Buying and selling of own real estate (SIC 68100)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
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
Other active building contractors.
Frequently asked questions
When are Kadox Ltd's accounts due?
Kadox Ltd's next accounts are due at Companies House by 1 September 2027 (in 324 days), covering the period to 31 December 2026.
When is Kadox Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 30 November 2026, due by 30 November 2027, and one for the period to 31 December 2026, due by 31 December 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Kadox Ltd still trading?
Kadox 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 Kadox Ltd do?
Kadox Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Buying and selling of own real estate (SIC 68100); Other letting and operating of own or leased real estate (SIC 68209).
How old is Kadox Ltd?
Kadox Ltd was incorporated on 1 December 2025, less than a year ago.
What is the penalty if Kadox 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 Kadox 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.