- Company number
- 17093978
- Incorporated
- 16 Mar 2026
- Registered office
- 203 Kilburn High Road, London, NW6 7HY
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Electrical installation; Other building completion and finishing
Mullion Studio Ltd is a newly incorporated private limited company registered in London, company number 17093978, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 16 December 2027, and its first CT600 is due at HMRC on 15 March 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.
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Where Mullion Studio Ltd is registered
The registered office is in London (NW6), in the Brent local authority area, London. Show NW6 7HY on a map.
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Also registered at this address
12 other companies use the same registered office as Mullion Studio Ltd.
- Az Builders & Plumbers LimitedSpecialist contractors
- Belgravia Creations LtdBuilders
- CKB Blackfen Freehold LimitedProperty developers
- CKB Blackfen Leasehold LimitedProperty developers
- CKB Main Road LimitedProperty developers
- Crossdav LtdSpecialist contractors
- Eizbiz Construction LimitedBuilders
- Fort Decorators LimitedPainters and decorators
- Naya Services LimitedBuilders
- Nocturnal Grove LtdProperty developers
- Prime Bodyshop Services LimitedMechanics and garages
- Sco Electrical & Building LimitedElectricians
What happens if Mullion Studio 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 16 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 17 Dec 2027 to 16 Jan 2028 | £150 |
| 1 to 3 months late | 17 Jan 2028 to 16 Mar 2028 | £375 |
| 3 to 6 months late | 17 Mar 2028 to 16 Jun 2028 | £750 |
| More than 6 months late | From 17 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 17093978
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 March 2026
- Registered office
- 203 Kilburn High Road, London, NW6 7HY
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Electrical installation (SIC 43210)
Other building completion and finishing (SIC 43390) - Year end
- 31 March (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 London
Other active building contractors registered in London.
- Mulloyconstruction Limited2019
- Multi Maintenance Ltd2020
- Multi Pro Tiler Ltd2026
- Multi Trade Solutions Ltd2026
- Multi Trades Solutions Ltd2025
- Multibuild Group Ltd2026
- Multifixing Home Improvement Ltd2015
- Multiplex Development Ltd2026
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Frequently asked questions
When are Mullion Studio Ltd's accounts due?
Mullion Studio Ltd's next accounts are due at Companies House by 16 December 2027 (in 430 days), covering the period to 31 March 2027.
When is Mullion Studio 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 15 March 2027, due by 15 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mullion Studio Ltd still trading?
Mullion Studio 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 Mullion Studio Ltd do?
Mullion Studio Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Electrical installation (SIC 43210); Other building completion and finishing (SIC 43390).
How old is Mullion Studio Ltd?
Mullion Studio Ltd was incorporated on 16 March 2026, less than a year ago.
What is the penalty if Mullion Studio 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 Mullion Studio 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.