- Company number
- 17031268
- Incorporated
- 13 Feb 2026
- Registered office
- Heath Lodge Heath Lodge, Danesbury Park Road, Welwyn, Hertfordshire, AL6 9SN
- Nature of business
- Construction of domestic buildings
G.I. Installation Services Limited is a newly incorporated private limited company registered in Welwyn, company number 17031268, one of 15 building contractors in Welwyn. Its next accounts are due at Companies House on 13 November 2027, and its first CT600 is due at HMRC on 12 February 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where G.I. Installation Services Limited is registered
The registered office is in Welwyn (AL6), in the North Hertfordshire local authority area, East of England. Show AL6 9SN on a map.
Other trade companies in AL6
- Herts Climate Solutions LtdPlumbers and heating engineers
- Cosmorepairs LtdRepair services
- Little Enterprise Group LtdProperty developers
- Sehiti Plumbing and Heating LtdPlumbers and heating engineers
- LMC Highway Design LtdCivil engineering
- Fox Huhu Trading LimitedBuilders
- Enclosure Zoolutions LtdProperty developers
- Old Welwyn Construction LtdBuilders
What happens if G.I. Installation Services 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 13 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Nov 2027 to 13 Dec 2027 | £150 |
| 1 to 3 months late | 14 Dec 2027 to 13 Feb 2028 | £375 |
| 3 to 6 months late | 14 Feb 2028 to 13 May 2028 | £750 |
| More than 6 months late | From 14 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 2029 | 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
- 17031268
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 February 2026
- Registered office
- Heath Lodge Heath Lodge, Danesbury Park Road, Welwyn, Hertfordshire, AL6 9SN
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Welwyn
Other active building contractors registered in Welwyn.
- Herts County Builders Limited2012
- Home County Garden Rooms Limited2023
- Magicautos Ltd2024
- MG Construction Solutions Ltd2019
- Mistry Construction Ltd2021
- Old Welwyn Construction Ltd2026
- Palmadene Limited2001
- Starline Construct Ltd2020
All building contractors in Welwyn · All trades in Welwyn · Builders across the UK
Frequently asked questions
When are G.I. Installation Services Limited's accounts due?
G.I. Installation Services Limited's next accounts are due at Companies House by 13 November 2027 (in 396 days), covering the period to 28 February 2027.
When is G.I. Installation Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 12 February 2027, due by 12 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is G.I. Installation Services Limited still trading?
G.I. Installation Services 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 G.I. Installation Services Limited do?
G.I. Installation Services Limited is registered under Construction of domestic buildings (SIC 41202).
How old is G.I. Installation Services Limited?
G.I. Installation Services Limited was incorporated on 13 February 2026, less than a year ago.
What is the penalty if G.I. Installation Services 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 G.I. Installation Services 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.