- Companies
- Property developers
- Bexleyheath
- Mainstream Projects Limited
Mainstream Projects Limited
- Company number
- 15610753
- Incorporated
- 2 Apr 20242 years trading
- Registered office
- Unit 2, 4-5 Market Place, Bexleyheath, DA6 7DU
- Nature of business
- Development of building projects
Mainstream Projects Limited is a 2-year-old private limited company registered in Bexleyheath, company number 15610753, one of 50 property development companies in Bexleyheath. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2024
From the balance sheet at 31 December 2024, as filed at Companies House.
Where Mainstream Projects Limited is registered
The registered office is in Bexleyheath (DA6), in the Bexley local authority area, London. Show DA6 7DU on a map.
Other trade companies in DA6
- Bego Construction LtdBuilders
- Triva LtdBuilders
- Green Core Construction LtdBuilders
- MD Lathams LimitedFinishing trades
- Quantara Support Services LtdFacilities management
- SNJ Property Development LimitedBuilders
- BTM Engineering LtdMechanics and garages
- Shelby Group LtdSpecialist contractors
Also registered at this address
6 other companies use the same registered office as Mainstream Projects Limited.
- Exterior Scapes LtdSpecialist contractors
- Finished Flooring LtdFloor and wall tilers
- High Maintenance (HS) LimitedFinishing trades
- Intermix Management LimitedSpecialist contractors
- Mainstream Granite LimitedProperty developers
- Water Tight Kent LimitedPlumbers and heating engineers
What happens if Mainstream Projects 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 15610753
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 April 2024 (2 years ago)
- Registered office
- Unit 2, 4-5 Market Place, Bexleyheath, DA6 7DU
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 27 November 2025
- Charges (mortgages)
- 2 outstanding of 2 registered
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Bexleyheath
Other active property development companies registered in Bexleyheath.
- Mason's Pride Limited2019
- Matt Rendering Ltd2024
- Moatbrook Ltd2009
- New Trend Builders Ltd2024
- North 2 South Enterprises Ltd2019
- Olufash Engineering & Construction Ltd2018
- Orion Property Transformation Ltd2017
- Paragon Build Limited2020
All property development companies in Bexleyheath · All trades in Bexleyheath · Property developers across the UK
Frequently asked questions
When are Mainstream Projects Limited's accounts due?
Mainstream Projects Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Mainstream Projects Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mainstream Projects Limited still trading?
Mainstream Projects 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 Mainstream Projects Limited do?
Mainstream Projects Limited is registered under Development of building projects (SIC 41100).
How old is Mainstream Projects Limited?
Mainstream Projects Limited was incorporated on 2 April 2024, 2 years ago.
What is the penalty if Mainstream Projects 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 Mainstream Projects 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.