- Company number
- 17374067
- Incorporated
- 31 Jul 2026
- Registered office
- 21 Ascot Close, Northolt, UB5 4EH
- Nature of business
- Construction of domestic buildings
MDK5 Ltd is a newly incorporated private limited company registered in Northolt, company number 17374067, one of 172 building contractors in Northolt. Its next accounts are due at Companies House on 30 April 2028, and its first CT600 is due at HMRC on 30 July 2028.
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 MDK5 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 MDK5 Ltd is registered
The registered office is in Northolt (UB5), in the Ealing local authority area, London. Show UB5 4EH on a map.
Other trade companies in UB5
- Byvolt Electrical Services LtdElectricians
- Harmony Buildworks LtdSpecialist contractors
- RBS Homes LtdFinishing trades
- Tda Construction LimitedBuilders
- Ivaan Roofing Solutions LtdRoofers
- Jacob Fleet Services LtdMotor traders
- Upliftcarsltd LtdMotor traders
- Caraze LtdMotor traders
What happens if MDK5 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 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2028 to 31 May 2028 | £150 |
| 1 to 3 months late | 1 Jun 2028 to 31 Jul 2028 | £375 |
| 3 to 6 months late | 1 Aug 2028 to 31 Oct 2028 | £750 |
| More than 6 months late | From 1 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 17374067
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 July 2026
- Registered office
- 21 Ascot Close, Northolt, UB5 4EH
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 July (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 in Northolt
Other active building contractors registered in Northolt.
- Meister Builder Ltd2022
- Mim Marinel Ltd2024
- Misty Construction Ltd2024
- MJ Constructionwork Ltd2024
- Mjo Construction Limited2012
- MLNL Building Services Ltd2022
- MM Mario Max Ltd2022
- Nati Bud Ltd2020
All building contractors in Northolt · All trades in Northolt · Builders across the UK
Frequently asked questions
When are MDK5 Ltd's accounts due?
MDK5 Ltd's next accounts are due at Companies House by 30 April 2028 (in 565 days), covering the period to 31 July 2027.
When is MDK5 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 July 2027, due by 30 July 2028, and one for the period to 31 July 2027, due by 31 July 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is MDK5 Ltd still trading?
MDK5 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 MDK5 Ltd do?
MDK5 Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is MDK5 Ltd?
MDK5 Ltd was incorporated on 31 July 2026, less than a year ago.
What is the penalty if MDK5 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 MDK5 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.