- Companies
- Machinery repair and installation
- Windsor
- Middlesex Sound & Lighting Limited
Middlesex Sound & Lighting Limited
- Company number
- 01744705
- Incorporated
- 8 Aug 198343 years trading
- Registered office
- 38 Eton Wick Road Eton Wick Road, Eton Wick, Windsor, SL4 6JL
- Nature of business
- Installation of industrial machinery and equipment; Retail sale of audio and video equipment in specialised stores
Middlesex Sound & Lighting Limited is a 43-year-old private limited company registered in Windsor, company number 01744705, one of 13 machinery repair and installation companies in Windsor. 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 down £447K (-18.8%) on the year before, to £1.9M.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £2.2M against £434K owed within a year: 5.1 times cover.
- 14 employees on average, up from 13 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £1.9M | £1.7M | £2.2M | £434K | 14 |
| 30 Nov 2024 | £2.4M | £1.5M | £2.7M | £453K | 13 |
| 30 Nov 2023 | £2.1M | £2M | £2.6M | £592K | 10 |
| 30 Nov 2022 | £1.9M | £1.9M | £2.5M | £648K | 8 |
| 30 Nov 2021 | £1.8M | £1.8M | £2.1M | £285K | 8 |
| 30 Nov 2020 | £1.7M | £1.8M | £1.9M | £216K | 9 |
| 30 Nov 2019 | £1.8M | £1.7M | £2.1M | £373K | 9 |
| 30 Nov 2018 | £1.6M | £1.5M | £1.9M | £336K | 10 |
| 30 Nov 2017 | £1.4M | £1.2M | £1.7M | £412K | 11 |
| 30 Nov 2016 | £862K | £558K | £1.1M | £333K |
Who runs and owns Middlesex Sound & Lighting Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| M*** O*** | Director | before Jul 1991 |
| D*** O*** | Director | Dec 2011 |
| C*** O*** | Secretary | Jul 1992 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| Davecastle Limited | Secretary (company) | Jul 1992 |
People with significant control (2)
Where Middlesex Sound & Lighting Limited is registered
The registered office is in Windsor (SL4), in the Windsor and Maidenhead local authority area, South East. Show SL4 6JL on a map.
Other trade companies in SL4
- A3 Hand Car Wash and Valeting Center LimitedCleaning companies
- Time Watch Repair Watford LtdRepair services
- Mobile Tyre Services 24/7 LtdMechanics and garages
- Hullscrub Thames LtdCleaning companies
- Black Rose Automotive Group LtdMotor traders
- Maldec Hatchet Farm LimitedProperty developers
- Pinehill Homes Partnerships LtdProperty developers
- Heatsense Renewables LtdElectricians
Also registered at this address
1 other company uses the same registered office as Middlesex Sound & Lighting Limited.
- Wish Services LimitedCleaning companies
What happens if Middlesex Sound & Lighting 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 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
- 01744705
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 August 1983 (43 years ago)
- Registered office
- 38 Eton Wick Road Eton Wick Road, Eton Wick, Windsor, SL4 6JL
- Nature of business
- Installation of industrial machinery and equipment (SIC 33200)
Retail sale of audio and video equipment in specialised stores (SIC 47430) - Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 20 July 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Windsor
Other active machinery repair and installation companies registered in Windsor.
- Orion Aircraft UK and Europe Limited2026
- Tanktap Beer Services Limited2025
- B Aero Ltd2025
- Clewer Boatyard Limited1943
- Cooltech Building Services Ltd1994
- Dave A Metal Limited2010
- Durkin Badham Ltd2026
- DW Machine Services Limited2014
All machinery repair and installation companies in Windsor · All trades in Windsor · Machinery repair and installation across the UK
Frequently asked questions
When are Middlesex Sound & Lighting Limited's accounts due?
Middlesex Sound & Lighting Limited's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Middlesex Sound & Lighting Limited'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 Middlesex Sound & Lighting Limited still trading?
Middlesex Sound & Lighting 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 Middlesex Sound & Lighting Limited do?
Middlesex Sound & Lighting Limited is registered under Installation of industrial machinery and equipment (SIC 33200); Retail sale of audio and video equipment in specialised stores (SIC 47430).
How old is Middlesex Sound & Lighting Limited?
Middlesex Sound & Lighting Limited was incorporated on 8 August 1983, 43 years ago.
Who runs Middlesex Sound & Lighting Limited?
Middlesex Sound & Lighting Limited has 2 active directors, the longest-serving appointed in Dec 2011. Their names and service addresses are on the Companies House register.
Who owns Middlesex Sound & Lighting Limited?
2 people or companies have significant control of Middlesex Sound & Lighting Limited: an individual (owns 75% or more of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Middlesex Sound & Lighting 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 Middlesex Sound & Lighting 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.