- Companies
- Electricians
- Bristol
- Zennio UK Limited
Zennio UK Limited
- Company number
- 12189182
- Incorporated
- 4 Sep 20197 years trading
- Registered office
- Boyce's Building 40-42 Regent Street, Clifton, Bristol, BS8 4HU
- Nature of business
- Electrical installation
Zennio UK Limited is a 7-year-old private limited company registered in Bristol, company number 12189182, one of 532 electrical contractors in Bristol. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £518K (-204.7%) on the year before, to -£771K.
- Net assets rose in 2 of 5 year-on-year comparisons on record.
- Current assets of £274K against £1.1M owed within a year: 0.3 times cover.
- 7 employees on average, up from 5 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | -£771K | £7,782 | £274K | £1.1M | 7 |
| 31 Dec 2024 | -£253K | £102K | £334K | £589K | 5 |
| 31 Dec 2023 | £47K | £176K | £307K | £262K | 3 |
| 31 Dec 2022 | £107K | £185K | £219K | £113K | 1 |
| 31 Dec 2021 | £37K | £35K | £123K | £87K | 2 |
| 31 Dec 2020 | £4,551 | £35K | £35K | £32K | 2 |
Where Zennio UK Limited is registered
The registered office is in Bristol (BS8), in the Bristol, City of local authority area, South West. Show BS8 4HU on a map.
Other trade companies in BS8
- Orto-UK LtdCleaning companies
- Ecorebel Cleaning LtdCleaning companies
- Summit Clean LtdCleaning companies
- Bristol City Scaffolding LimitedScaffolders
- Homebill LimitedProperty developers
- Firmtrade Home Improvements LtdBuilders
- Sa Site Services Ltd.Civil engineering
- Elevate Bathrooms and Tiles LimitedFinishing trades
Also registered at this address
7 other companies use the same registered office as Zennio UK Limited.
- Harbour Garage (Portishead) LimitedMechanics and garages
- Insight Specialist Spaces LimitedFinishing trades
- MDT Auto Engineers LimitedMechanics and garages
- Moore Development Projects LtdProperty developers
- Myrtle Tree Holdings LimitedBuilders
- Nexus Electrical Services LtdElectricians
- Tipton Zullo Developments LimitedProperty developers
What happens if Zennio UK 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 12189182
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 September 2019 (7 years ago)
- Registered office
- Boyce's Building 40-42 Regent Street, Clifton, Bristol, BS8 4HU
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 3 September 2026
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 Bristol
Other active electrical contractors registered in Bristol.
- 1ST 4 Electrical Services Ltd2006
- 1ST Electrical Bristol Limited2015
- 21ST Century Building Services Ltd.2000
- 3Heat Electrical Ltd2025
- 4CS Global Academy Ltd2025
- A Brice Electrical Ltd2014
- A C Electric (Bristol) Ltd2023
- A G Building Services (South West) Limited2002
All electrical contractors in Bristol · All trades in Bristol · Electricians across the UK
Frequently asked questions
When are Zennio UK Limited's accounts due?
Zennio UK Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Zennio UK Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Zennio UK Limited still trading?
Zennio UK 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 Zennio UK Limited do?
Zennio UK Limited is registered under Electrical installation (SIC 43210).
How old is Zennio UK Limited?
Zennio UK Limited was incorporated on 4 September 2019, 7 years ago.
What is the penalty if Zennio UK 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 Zennio UK 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.