- Companies
- Electricians
- London
- Halloio Ltd
Halloio Ltd
- Company number
- 17066291
- Incorporated
- 3 Mar 2026
- Registered office
- 4TH Floor Office, 205 Regent Street, London, W1B 4NB
- Nature of business
- Electrical installation; Business and domestic software development; Information technology consultancy activities; Other information technology service activities
Halloio Ltd is a newly incorporated private limited company registered in London, company number 17066291, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 3 December 2027, and its first CT600 is due at HMRC on 2 March 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Halloio Ltd is registered
The registered office is in London (W1B), in the Westminster local authority area, London. Show W1B 4NB on a map.
Other trade companies in W1B
- Nova Relay LtdElectricians
- Nova Painting Contractors LtdPainters and decorators
- Malaysia Energy Land Bridge LimitedCivil engineering
- Melb LimitedCivil engineering
- Meridian Build Group LtdBuilders
- Aix Group Holdings LtdSpecialist contractors
- Active 24/7 Drainage & Plumbing LtdPlumbers and heating engineers
- Smith's Rural Builds LtdBuilders
Also registered at this address
3 other companies use the same registered office as Halloio Ltd.
- Fowler Construction Cost Management LtdProperty developers
- Onyx Engineering Solutions LtdCivil engineering
- Primemove Clean & Clear LimitedCleaning companies
What happens if Halloio 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 3 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Dec 2027 to 3 Jan 2028 | £150 |
| 1 to 3 months late | 4 Jan 2028 to 3 Mar 2028 | £375 |
| 3 to 6 months late | 4 Mar 2028 to 3 Jun 2028 | £750 |
| More than 6 months late | From 4 Jun 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
- 17066291
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 March 2026
- Registered office
- 4TH Floor Office, 205 Regent Street, London, W1B 4NB
- Nature of business
- Electrical installation (SIC 43210)
Business and domestic software development (SIC 62012)
Information technology consultancy activities (SIC 62020)
Other information technology service activities (SIC 62090) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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 London
Other active electrical contractors registered in London.
- Hallowell Electrical Engineers Limited2007
- Halrix Commercial Systems Limited2023
- Hamade Electrical Services & Maintenance Ltd2026
- Hamr Solutions Limited2024
- Hamstead Services Limited2023
- Hanby Electrical Ltd2025
- Handy Fox Ltd2025
- Handy Sparks Electrical Ltd2021
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Halloio Ltd's accounts due?
Halloio Ltd's next accounts are due at Companies House by 3 December 2027 (in 417 days), covering the period to 31 March 2027.
When is Halloio Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 2 March 2027, due by 2 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Halloio Ltd still trading?
Halloio 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 Halloio Ltd do?
Halloio Ltd is registered under Electrical installation (SIC 43210); Business and domestic software development (SIC 62012); Information technology consultancy activities (SIC 62020); Other information technology service activities (SIC 62090).
How old is Halloio Ltd?
Halloio Ltd was incorporated on 3 March 2026, less than a year ago.
What is the penalty if Halloio 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 Halloio 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.