- Companies
- Electricians
- Redhill
- Altera Ltd
Altera Ltd
- Company number
- 16524188
- Incorporated
- 17 Jun 20251 year trading
- Registered office
- 5 Blackstone Hill, Redhill, RH1 6BE
- Nature of business
- Electrical installation; Bookkeeping activities; Tax consultancy
Altera Ltd is a 1-year-old private limited company registered in Redhill, company number 16524188, one of 74 electrical contractors in Redhill. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 March 2026, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Altera Ltd is registered
The registered office is in Redhill (RH1), in the Reigate and Banstead local authority area, South East. Show RH1 6BE on a map.
Other trade companies in RH1
- Willows Property Services LtdCleaning companies
- Rustic Civil LtdBuilders
- Redmeres LtdInstallers
- CTC Maintenance Services LtdPainters and decorators
- Mercury Mechanical LimitedElectricians
- Gotoroofingandguttering LtdRoofers
- Fine Cut Carpentry and Construction LimitedInstallers
- Sixes Carpentry LimitedJoiners and carpenters
Also registered at this address
2 other companies use the same registered office as Altera Ltd.
- Filth Busters Exterior Cleaning LtdCleaning companies
- Skinner and Howes Group LtdElectricians
What happens if Altera 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 16524188
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 June 2025 (1 year ago)
- Registered office
- 5 Blackstone Hill, Redhill, RH1 6BE
- Nature of business
- Electrical installation (SIC 43210)
Bookkeeping activities (SIC 69202)
Tax consultancy (SIC 69203) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 13 May 2026
- Previous names
- Summit Accounts Ltd (until 13 Oct 2025)
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Redhill
Other active electrical contractors registered in Redhill.
- Amie Electro Limited2019
- Aston Dove Limited1988
- Battlebridge Maintenance Services (Group) Ltd2025
- Battlebridge Maintenance Services (Installations) Ltd2025
- Battlebridge Maintenance Services (London) Ltd2025
- Battlebridge Maintenance Services (Southern) Ltd2024
- Bourne Electrical Contracting Limited2025
- Bright Spark 24/7 Ltd2025
All electrical contractors in Redhill · All trades in Redhill · Electricians across the UK
Frequently asked questions
When are Altera Ltd's accounts due?
Altera Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Altera Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Altera Ltd still trading?
Altera 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 Altera Ltd do?
Altera Ltd is registered under Electrical installation (SIC 43210); Bookkeeping activities (SIC 69202); Tax consultancy (SIC 69203).
How old is Altera Ltd?
Altera Ltd was incorporated on 17 June 2025, 1 year ago.
What is the penalty if Altera 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 Altera 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.