- Companies
- Property developers
- London
- Summix SRD Developments Limited
Summix SRD Developments Limited
- Company number
- 10942772
- Incorporated
- 1 Sep 20179 years trading
- Registered office
- Fifth Floor, Berkeley Square House, Berkeley Square, London, W1J 6BY
- Nature of business
- Development of building projects
Summix SRD Developments Limited is a 9-year-old private limited company registered in London, company number 10942772, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £173 (-0%) on the year before, to -£851K.
- Net assets rose in 1 of 8 year-on-year comparisons on record.
- 4 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | -£851K | £851K | 4 | ||
| 31 Dec 2024 | -£851K | £1M | 4 | ||
| 31 Dec 2023 | £165K | £3,500 | 4 | ||
| 31 Dec 2022 | £168K | £0 | £164K | £3,000 | 3 |
| 31 Dec 2021 | £180K | £2.2M | £2.2M | £2M | 3 |
| 31 Dec 2020 | -£293K | £6,793 | £2.1M | £2.4M | 3 |
| 31 Dec 2019 | -£159K | £2M | £2.2M | 3 | |
| 31 Dec 2018 | -£32K | £180 | £1.9M | £1.9M | |
| 28 Sep 2017 | £1 | £1 |
Who runs and owns Summix SRD Developments Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (4)
| Name | Role | Appointed |
|---|---|---|
| T*** N*** | Director | Sep 2017 |
| S*** S*** | Director | Sep 2017 |
| B*** M*** | Director | Sep 2023 |
| N*** O*** | Director | Dec 2024 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| A*** R*** | Director | Oct 2018 | Dec 2024 |
Person with significant control
Charges (secured borrowing)
1 of 1 registered charge is outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Bridgemere Limited And Westwells Developments Limited | Outstanding | Jan 2018 |
Where Summix SRD Developments Limited is registered
The registered office is in London (W1J), in the Westminster local authority area, London. Show W1J 6BY on a map.
Other trade companies in W1J
- Eq Care Bradley Stoke LimitedProperty developers
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- Eq Care Devizes LimitedProperty developers
- Eq Care Waterlooville LimitedProperty developers
- Domna Renewables LimitedInstallers
- Apex Build London LimitedBuilders
- Conquest Build UK LtdProperty developers
- UK Vehicle Imports LimitedMotor traders
Shared registered office
27 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Summix SRD Developments 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 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
- 10942772
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 September 2017 (9 years ago)
- Registered office
- Fifth Floor, Berkeley Square House, Berkeley Square, London, W1J 6BY
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 31 August 2026
- Charges (mortgages)
- 1 outstanding of 1 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 London
Other active property development companies registered in London.
- Summix Vfa Developments Limited2025
- Summix WPW Developments Limited2019
- Sumskas Building Ltd2026
- Sun & Harrow Ltd2015
- Sun City Projects UK Ltd2020
- Sun Contractors Limited2004
- Sun Contractors London Ltd2024
- Sun Focus Properties Ltd2014
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Summix SRD Developments Limited's accounts due?
Summix SRD Developments Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Summix SRD Developments Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Summix SRD Developments Limited still trading?
Summix SRD Developments 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 Summix SRD Developments Limited do?
Summix SRD Developments Limited is registered under Development of building projects (SIC 41100).
How old is Summix SRD Developments Limited?
Summix SRD Developments Limited was incorporated on 1 September 2017, 9 years ago.
Who runs Summix SRD Developments Limited?
Summix SRD Developments Limited has 4 active directors, the longest-serving appointed in Sep 2017. Their names and service addresses are on the Companies House register.
Who owns Summix SRD Developments Limited?
One person or company has significant control of Summix SRD Developments Limited: Scp I Holdco (UK) Limited (owns 75% or more of the shares).
What is the penalty if Summix SRD Developments 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 Summix SRD Developments 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.