- Company number
- 10502208
- Incorporated
- 29 Nov 20169 years trading
- Registered office
- 10 Latimer Gardens, Pinner, HA5 3RA
- Nature of business
- Glazing
Sio2 Ltd is a 9-year-old private limited company registered in Pinner, company number 10502208, one of 12 glazing companies in Pinner. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 up £2,322 (+147.5%) on the year before, to £748.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- 2 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £748 | 2 | |||
| 30 Nov 2024 | -£1,574 | 2 | |||
| 30 Nov 2023 | £176 | 2 | |||
| 30 Nov 2022 | £3,265 | 2 | |||
| 30 Nov 2021 | £583 | 2 | |||
| 30 Nov 2020 | £551 | £16K | £665 | 2 | |
| 30 Nov 2019 | £157 | £1,772 | £1,615 | 1 | |
| 30 Nov 2018 | £271 | £7,615 | £7,344 | ||
| 30 Nov 2017 | £196 | £7,457 | £7,261 |
Who runs and owns Sio2 Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| A*** M*** | Director | Nov 2016 |
| I*** M*** | Director | Jan 2026 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| I*** M*** | Director | Aug 2020 | Jan 2026 |
People with significant control (2)
Where Sio2 Ltd is registered
The registered office is in Pinner (HA5), in the Harrow local authority area, London. Show HA5 3RA on a map.
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- Kite Property Management LtdBuilders
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- Executive Maintenance LtdFinishing trades
- Truspan LtdBuilders
- Mak Electrical Services LtdBuilders
- Bori Scaffolding LtdScaffolders
What happens if Sio2 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 10502208
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 November 2016 (9 years ago)
- Registered office
- 10 Latimer Gardens, Pinner, HA5 3RA
- Nature of business
- Glazing (SIC 43342)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 11 January 2026
Filing notes for glazing companies
Glazing companies often take deposits before work starts. Deposits held at the year end are a liability, not income, until the job is done.
Similar companies in Pinner
Other active glazing companies registered in Pinner.
- Zestpart Ltd2014
- Bsa Glazing and Plastic Limited2026
- Euro Glass and Plastics Limited2026
- Eurothermal Glazing Ltd2024
- Glaze & Shade Ltd2026
- N.N Double Glazing Installation and Repairs Ltd2023
- Okan Limited2007
- Omnivista Glass Ltd2019
All glazing companies in Pinner · All trades in Pinner · Glaziers across the UK
Frequently asked questions
When are Sio2 Ltd's accounts due?
Sio2 Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Sio2 Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Sio2 Ltd still trading?
Sio2 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 Sio2 Ltd do?
Sio2 Ltd is registered under Glazing (SIC 43342).
How old is Sio2 Ltd?
Sio2 Ltd was incorporated on 29 November 2016, 9 years ago.
Who runs Sio2 Ltd?
Sio2 Ltd has 2 active directors, the longest-serving appointed in Nov 2016. Their names and service addresses are on the Companies House register.
Who owns Sio2 Ltd?
2 people or companies have significant control of Sio2 Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Sio2 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 Sio2 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.