- Companies
- Mechanics and garages
- Langport
- Seismic Performance Engineering Ltd
Seismic Performance Engineering Ltd
- Company number
- 15445996
- Incorporated
- 26 Jan 20242 years trading
- Registered office
- Pitney Cottage, Pitney Hill, Langport, TA10 9ES
- Nature of business
- Maintenance and repair of motor vehicles; Other engineering activities
Seismic Performance Engineering Ltd is a 2-year-old private limited company registered in Langport, company number 15445996, one of the UK's vehicle repair garages. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 January 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Seismic Performance Engineering Ltd is registered
The registered office is in Langport (TA10), in the Somerset local authority area, South West. Show TA10 9ES on a map.
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What happens if Seismic Performance Engineering 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 15445996
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 January 2024 (2 years ago)
- Registered office
- Pitney Cottage, Pitney Hill, Langport, TA10 9ES
- Nature of business
- Maintenance and repair of motor vehicles (SIC 45200)
Other engineering activities (SIC 71129) - Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 25 January 2026
Filing notes for vehicle repair garages
Garages hold parts stock and often own diagnostic equipment and ramps, which qualify for capital allowances.
Similar companies in Langport
Other active vehicle repair garages registered in Langport.
All vehicle repair garages in Langport · All trades in Langport · Mechanics and garages across the UK
Frequently asked questions
When are Seismic Performance Engineering Ltd's accounts due?
Seismic Performance Engineering Ltd's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Seismic Performance Engineering Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Seismic Performance Engineering Ltd still trading?
Seismic Performance Engineering 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 Seismic Performance Engineering Ltd do?
Seismic Performance Engineering Ltd is registered under Maintenance and repair of motor vehicles (SIC 45200); Other engineering activities (SIC 71129).
How old is Seismic Performance Engineering Ltd?
Seismic Performance Engineering Ltd was incorporated on 26 January 2024, 2 years ago.
What is the penalty if Seismic Performance Engineering 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 Seismic Performance Engineering 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.