- Companies
- Civil engineering
- Leeds
- I.A. Design Limited
I.A. Design Limited
- Company number
- 03260075
- Incorporated
- 7 Oct 199630 years trading
- Registered office
- 7 the Engine House, Neptune Street, Leeds, West Yorkshire, LS9 8AN
- Nature of business
- Construction of other civil engineering projects n.e.c.
I.A. Design Limited is a 30-year-old private limited company registered in Leeds, company number 03260075, one of 163 civil engineering contractors in Leeds. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where I.A. Design Limited is registered
The registered office is in Leeds (LS9), in the Leeds local authority area, Yorkshire and The Humber. Show LS9 8AN on a map.
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What happens if I.A. Design 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 03260075
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 1996 (30 years ago)
- Registered office
- 7 the Engine House, Neptune Street, Leeds, West Yorkshire, LS9 8AN
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 18 December 2025
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Leeds
Other active civil engineering contractors registered in Leeds.
- Imperium Consultancy Group Ltd2017
- Indepth Civil Engineering Services Limited2002
- Infrastructure Delivery Partners Limited2026
- International Line Services Limited2019
- Interquip Global Limited2019
- Ive Construction & Engineering Ltd2025
- J S Earthing Solutions Limited2004
- J&R Utilities Ltd2026
All civil engineering contractors in Leeds · All trades in Leeds · Civil engineering across the UK
Frequently asked questions
When are I.A. Design Limited's accounts due?
I.A. Design Limited's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is I.A. Design Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is I.A. Design Limited still trading?
I.A. Design 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 I.A. Design Limited do?
I.A. Design Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is I.A. Design Limited?
I.A. Design Limited was incorporated on 7 October 1996, 30 years ago.
What is the penalty if I.A. Design 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 I.A. Design 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.