- Companies
- Machinery repair and installation
- Hull
- Interdoor Limited
Interdoor Limited
- Company number
- 01921289
- Incorporated
- 11 Jun 198541 years trading
- Registered office
- 315 Ideal Business Park, National Avenue, Hull, HU5 4JB
- Nature of business
- Repair of other equipment
Interdoor Limited is a 41-year-old private limited company registered in Hull, company number 01921289, one of 185 machinery repair and installation companies in Hull. Its next accounts are due at Companies House on 30 December 2026, and its first CT600 is due at HMRC on 31 December 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 £38K (+2.6%) on the year before, to £1.5M.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £1.7M against £1.1M owed within a year: 1.5 times cover.
- 25 employees on average, up from 22 the year before.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £1.5M | £215K | £1.7M | £1.1M | 25 |
| 31 Dec 2023 | £1.5M | £204K | £983K | £526K | 22 |
| 31 Dec 2022 | £1.1M | £331K | £1.6M | £266K | 15 |
| 31 Dec 2021 | £882K | £204K | £1.2M | £362K | 15 |
| 31 Dec 2020 | £758K | £441K | £1.3M | £450K | 17 |
| 31 Dec 2019 | £550K | £14K | £726K | £369K | 16 |
| 31 Dec 2018 | £277K | £21K | £855K | £590K | 16 |
| 31 Dec 2017 | £20K | £702 | £597K | £577K | |
| 31 Dec 2016 | £2 | ||||
| 31 Dec 2015 | £2 |
Public contracts won
Interdoor Limited has one public sector contract award on record; the ones with their own published value total £53K (2024). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Nuclear Restoration Services Ltd (Dounreay) | Maintenance of Industrial Doors on the Dounreay Site | £53K | 1 Jul 2024 |
Where Interdoor Limited is registered
The registered office is in Hull (HU5), in the Kingston upon Hull, City of local authority area, Yorkshire and The Humber. Show HU5 4JB on a map.
Other trade companies in HU5
- Alstrax LtdGroundworks and demolition
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- Pinnacle Properties Hull LtdBuilders
- The Bathroom Company (Hull) LtdPlumbers and heating engineers
- P Hemmo Property Management LtdProperty developers
- Viking Plumbing and Heating Hull LtdPlumbers and heating engineers
- Kalls Renewables LtdCivil engineering
- Fuse Electrical Yorkshire LimitedElectricians
What happens if Interdoor 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 30 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Mar 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Mar 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
- 01921289
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 June 1985 (41 years ago)
- Registered office
- 315 Ideal Business Park, National Avenue, Hull, HU5 4JB
- Nature of business
- Repair of other equipment (SIC 33190)
- Year end
- 30 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 3 November 2025
- Charges (mortgages)
- 2 outstanding of 8 registered
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 Hull
Other active machinery repair and installation companies registered in Hull.
- J Clark Technical Ltd2018
- J S Subsea Services Ltd2017
- J&K Commercials Limited2015
- Jack Robinson (Hull) Ltd2026
- JB Gas Contractors Ltd2010
- JK Spa Ltd2022
- JP NDT Limited2014
- JS Vehicle Inspection Ltd2007
All machinery repair and installation companies in Hull · All trades in Hull · Machinery repair and installation across the UK
Frequently asked questions
When are Interdoor Limited's accounts due?
Interdoor Limited's next accounts are due at Companies House by 30 December 2026 (in 78 days), covering the period to 30 March 2026.
When is Interdoor 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 31 December 2025, due by 31 December 2026, and one for the period to 30 March 2026, due by 30 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Interdoor Limited still trading?
Interdoor 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 Interdoor Limited do?
Interdoor Limited is registered under Repair of other equipment (SIC 33190).
How old is Interdoor Limited?
Interdoor Limited was incorporated on 11 June 1985, 41 years ago.
Has Interdoor Limited won public sector contracts?
Yes. Interdoor Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £53K), most recently from Nuclear Restoration Services Ltd (Dounreay).
What is the penalty if Interdoor 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 Interdoor 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.