- Companies
- Specialist contractors
- Cardiff
- GSM Mechanical Tech Ltd
GSM Mechanical Tech Ltd
- Company number
- 14309754
- Incorporated
- 22 Aug 20224 years trading
- Registered office
- 79 Bedford Street, Bedford Street, Cardiff, CF24 3DB
- Nature of business
- Other specialised construction activities n.e.c.
GSM Mechanical Tech Ltd is a 4-year-old private limited company registered in Cardiff, company number 14309754, one of 173 specialist construction companies in Cardiff. Companies House shows its accounts as overdue: they were due on 31 August 2026.
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 up £3,829 on the year before, to £3,830.
- Current assets of £300 against £4,130 owed within a year: 0.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2023 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2024 | £3,830 | £300 | £4,130 | 1 | |
| 31 Aug 2023 | £1 | £1 |
Where GSM Mechanical Tech Ltd is registered
The registered office is in Cardiff (CF24), in the Cardiff local authority area, Wales. Show CF24 3DB on a map.
Other trade companies in CF24
- New Capital Tyres LtdMotor traders
- Beza Home Climate LtdPlumbers and heating engineers
- Jafa Construction LtdBuilders
- A R Lawn Care & Garden Services LtdLandscapers and gardeners
- RK Asset & Trading Co LtdMotor traders
- ZCC Garage LtdMechanics and garages
- Szot LtdPlasterers
- Oceanway Tyres LtdMechanics and garages
Also registered at this address
1 other company uses the same registered office as GSM Mechanical Tech Ltd.
- Field Services Tech LtdCivil engineering
What happens if GSM Mechanical 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 | 1 Sep 2026 to 30 Sep 2026 | £150 |
| 1 to 3 months late | 1 Oct 2026 to 30 Nov 2026 | £375 |
| 3 to 6 months late | 1 Dec 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 | 1 Dec 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 30 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 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
- 14309754
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 August 2022 (4 years ago)
- Registered office
- 79 Bedford Street, Bedford Street, Cardiff, CF24 3DB
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2024
- Last confirmation statement
- 21 August 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Cardiff
Other active specialist construction companies registered in Cardiff.
- GW Groundworks (North East) Ltd2023
- Gwynt360 Limited2025
- Hammonds Signs Limited2004
- Hennessey Construction Consultancy Ltd2020
- Howe and Jones Limited2020
- Ias Construction & Maintenance Limited2017
- Ikennaji Investment Ltd2019
- Inavision Construction Ltd2024
All specialist construction companies in Cardiff · All trades in Cardiff · Specialist contractors across the UK
Frequently asked questions
When are GSM Mechanical Tech Ltd's accounts due?
GSM Mechanical Tech Ltd's accounts were due at Companies House on 31 August 2026 and the register shows them as overdue.
When is GSM Mechanical Tech 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 31 August 2025, due by 31 August 2026, and one for the period to 30 November 2025, due by 30 November 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is GSM Mechanical Tech Ltd still trading?
GSM Mechanical 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 GSM Mechanical Tech Ltd do?
GSM Mechanical Tech Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is GSM Mechanical Tech Ltd?
GSM Mechanical Tech Ltd was incorporated on 22 August 2022, 4 years ago.
What is the penalty if GSM Mechanical 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 GSM Mechanical 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.