- Companies
- Machinery repair and installation
- Slough
- Extreme Alloys London Limited
Extreme Alloys London Limited
- Company number
- 11079163
- Incorporated
- 23 Nov 20178 years trading
- Registered office
- Unit 2A Galleymead Road, Colnbrook, Slough, SL3 0EN
- Nature of business
- Repair and maintenance of other transport equipment n.e.c.
Extreme Alloys London Limited is a 8-year-old private limited company registered in Slough, company number 11079163, one of 62 machinery repair and installation companies in Slough. 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 £1,187 (-75.5%) on the year before, to £385.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £284K against £266K owed within a year: 1.1 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £385 | £5,126 | £284K | £266K | 3 |
| 30 Nov 2024 | £1,572 | £4,885 | £262K | £234K | 3 |
| 30 Nov 2023 | £2,812 | £4,847 | £175K | £155K | 3 |
| 30 Nov 2022 | -£2,320 | £2,988 | £152K | £118K | 3 |
| 30 Nov 2021 | £108 | £8,778 | £141K | £98K | 3 |
| 30 Nov 2020 | -£2,632 | £18K | £127K | £129K | 0 |
| 30 Nov 2019 | -£35K | £2,772 | £7,772 | £42K | 3 |
Where Extreme Alloys London Limited is registered
The registered office is in Slough (SL3), in the Slough local authority area, South East. Show SL3 0EN on a map.
Other trade companies in SL3
- Tac Design & Build LtdFinishing trades
- G&S Formwork LtdBuilders
- Klenzo LtdCleaning companies
- West London Crown Construction LtdBuilders
- Dahlia Investment Group LimitedProperty developers
- Ekon Electrics LtdElectricians
- R&G Maintenance LtdCleaning companies
- Cornerstone Homes & Estates LtdProperty developers
Also registered at this address
1 other company uses the same registered office as Extreme Alloys London Limited.
- Extreme Accident Repairs LtdMachinery repair and installation
What happens if Extreme Alloys London 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
- 11079163
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 November 2017 (8 years ago)
- Registered office
- Unit 2A Galleymead Road, Colnbrook, Slough, SL3 0EN
- Nature of business
- Repair and maintenance of other transport equipment n.e.c. (SIC 33170)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 29 January 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 Slough
Other active machinery repair and installation companies registered in Slough.
- Firas Private Limited2026
- Hamilton Robson Limited2015
- Jay C Security Limited2019
- John & Sons Solutions Limited2025
- Machinery Plant &Trucks Limited2025
- MCF Install Ltd2026
- MD Electricals (London) Ltd2023
- Meraze Limited2011
All machinery repair and installation companies in Slough · All trades in Slough · Machinery repair and installation across the UK
Frequently asked questions
When are Extreme Alloys London Limited's accounts due?
Extreme Alloys London 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 Extreme Alloys London 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 Extreme Alloys London Limited still trading?
Extreme Alloys London 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 Extreme Alloys London Limited do?
Extreme Alloys London Limited is registered under Repair and maintenance of other transport equipment n.e.c. (SIC 33170).
How old is Extreme Alloys London Limited?
Extreme Alloys London Limited was incorporated on 23 November 2017, 8 years ago.
What is the penalty if Extreme Alloys London 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 Extreme Alloys London 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.