Company profile · Machinery repair and installation
ZK Tech Ltd
ZK Tech Ltd is a 4-year-old private limited company registered in Belfast, company number NI683526, one of 90 machinery repair and installation companies in Belfast. Companies House shows its accounts as overdue: they were due on 29 August 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2024
From the balance sheet at 29 November 2024, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
ZK Tech Ltd over the years
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 £49K (-622%) on the year before, to -£41K.
- Current assets of £16K against £60K owed within a year: 0.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 3 years, 2022 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 29 Nov 2024 | -£41K | £16K | £60K | 2 | |
| 30 Nov 2023 | £7,820 | £19K | £16K | 2 | |
| 30 Nov 2022 | £6,832 | £24K | £23K | 0 |
Where ZK Tech Ltd is registered
The registered office is in Belfast (BT1), in the Belfast local authority area, Northern Ireland. Show BT1 6BB on a map.
Other trade companies in BT1
- Atlas Property and Holdings LtdProperty developers
- Geohac LimitedGroundworks and demolition
- XM Vehicle Solutions LimitedMotor traders
- Shine Renewables NI LimitedElectricians
- The Rathstone Group LtdCleaning companies
- Chenyukeji LtdMotor traders
- Linnexttech Shop LtdMotor traders
- Techright Environmental Ireland LtdCleaning companies
What happens if ZK Tech Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Aug 2026 to 29 Sep 2026 | £150 |
| 1 to 3 months late | 30 Sep 2026 to 29 Nov 2026 | £375 |
| 3 to 6 months late | 30 Nov 2026 to 28 Feb 2027 | £750 |
| More than 6 months late | From 1 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Nov 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 29 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Nov 2027 | 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
- NI683526
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 November 2021 (4 years ago)
- Registered office
- Unit 3 104 College Building, College Avenue, Belfast, BT1 6BB
- Nature of business
- Repair of electrical equipment (SIC 33140)
Retail sale of mobile telephones (SIC 47421)
Retail sale of telecommunications equipment other than mobile telephones (SIC 47429)
Repair of communication equipment (SIC 95120) - Year end
- 29 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 29 November 2024
- Last confirmation statement
- 16 October 2025
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 Belfast
Other active machinery repair and installation companies registered in Belfast.
- 247 Aircraft Maintenance Limited2026
- Adamson Refrigeration Contracts Ltd2019
- Aecor Marine Ltd2016
- Agape Communications Ltd2008
- Amh Engineering N.I. Ltd2025
- Amusement Sales & Service Ltd1999
- Archway Aviation Services Limited2025
- Aviation Tech Ltd2026
All machinery repair and installation companies in Belfast · All trades in Belfast · Machinery repair and installation across the UK
Frequently asked questions
When are ZK Tech Ltd's accounts due?
ZK Tech Ltd's accounts were due at Companies House on 29 August 2026 and the register shows them as overdue.
When is ZK Tech Ltd's CT600 due?
The CT600 for the period to 29 November 2025 is due at HMRC by 29 November 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 30 August 2026.
Is ZK Tech Ltd still trading?
ZK Tech Ltd is listed as active on the Companies House register (checked 12 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 ZK Tech Ltd do?
ZK Tech Ltd is registered under Repair of electrical equipment (SIC 33140); Retail sale of mobile telephones (SIC 47421); Retail sale of telecommunications equipment other than mobile telephones (SIC 47429); Repair of communication equipment (SIC 95120).
How old is ZK Tech Ltd?
ZK Tech Ltd was incorporated on 2 November 2021, 4 years ago.
What is the penalty if ZK Tech 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 ZK Tech Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.