- Companies
- Specialist contractors
- Milton Keynes
- Idk Builder Ltd
Idk Builder Ltd
- Company number
- 16176631
- Incorporated
- 10 Jan 20251 year trading
- Registered office
- 7 Bunkers Crescent, Bletchley, Milton Keynes, MK3 6FP
- Nature of business
- Other specialised construction activities n.e.c.
Idk Builder Ltd is a 1-year-old private limited company registered in Milton Keynes, company number 16176631, one of 171 specialist construction companies in Milton Keynes. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Idk Builder Ltd is registered
The registered office is in Milton Keynes (MK3), in the Milton Keynes local authority area, South East. Show MK3 6FP on a map.
Other trade companies in MK3
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- Hoichuk LtdLandscapers and gardeners
- Stokes Properties and Renovations LimitedFinishing trades
- All Pro Contractors LimitedRoofers
- MK Power Factor LtdElectricians
- LWM Electrical LtdElectricians
- Deep Clean Top Car Wash LtdCleaning companies
- Savitar Construction LtdProperty developers
What happens if Idk Builder 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16176631
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 January 2025 (1 year ago)
- Registered office
- 7 Bunkers Crescent, Bletchley, Milton Keynes, MK3 6FP
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 9 January 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Milton Keynes
Other active specialist construction companies registered in Milton Keynes.
- Intexion Limited2009
- J G Contractors Limited2006
- Jigsaw Scenery Limited2015
- Jo&L Service Ltd2024
- John Morris Plant Hire Limited2024
- Kamus Property Maintenance Ltd2026
- Keyne Developments Ltd2010
- Kingsway Property Maintenance Limited2006
All specialist construction companies in Milton Keynes · All trades in Milton Keynes · Specialist contractors across the UK
Frequently asked questions
When are Idk Builder Ltd's accounts due?
Idk Builder Ltd's next accounts are due at Companies House by 31 October 2027 (in 383 days), covering the period to 31 January 2027.
When is Idk Builder Ltd's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is Idk Builder Ltd still trading?
Idk Builder Ltd is listed as active on the Companies House register (checked 12 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 Idk Builder Ltd do?
Idk Builder Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Idk Builder Ltd?
Idk Builder Ltd was incorporated on 10 January 2025, 1 year ago.
What is the penalty if Idk Builder 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 Idk Builder Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.