- Companies
- Machinery repair and installation
- Doncaster
- Interlec Group Ltd.
Interlec Group Ltd.
- Company number
- 10739618
- Incorporated
- 25 Apr 20179 years trading
- Registered office
- LN12 Armstrong House First Avenue, Doncaster Finningley Airport, Doncaster, DN9 3GA
- Nature of business
- Repair of electrical equipment
Interlec Group Ltd. is a 9-year-old private limited company registered in Doncaster, company number 10739618, one of 137 machinery repair and installation companies in Doncaster. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 2028.
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 £235K (+27.9%) on the year before, to £1.1M.
- Net assets rose in 7 of 8 year-on-year comparisons on record.
- Current assets of £1.1M against £148K owed within a year: 7.2 times cover.
- 14 employees on average, up from 10 the year before.
- Balance sheets on record for 9 years, 2018 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2026 | £1.1M | £321K | £1.1M | £148K | 14 |
| 30 Apr 2025 | £844K | £175K | £755K | £114K | 10 |
| 30 Apr 2024 | £755K | £236K | £807K | £148K | 12 |
| 30 Apr 2023 | £546K | £100K | £653K | £183K | 10 |
| 30 Apr 2022 | £73K | £166K | £73K | 10 | |
| 30 Apr 2021 | £115K | £193K | £57K | 8 | |
| 30 Apr 2020 | £107K | £168K | £100K | 4 | |
| 30 Apr 2019 | £32K | £46K | £17K | 4 | |
| 30 Apr 2018 | £30K | £46K | £16K | 2 |
Who runs and owns Interlec Group Ltd.
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| N*** G*** | Director | Apr 2017 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| R*** C*** | Director | Apr 2017 | May 2026 |
People with significant control (2)
Where Interlec Group Ltd. is registered
The registered office is in Doncaster (DN9), in the Doncaster local authority area, Yorkshire and The Humber. Show DN9 3GA on a map.
Other trade companies in DN9
- Lsrec LtdElectricians
- Misterton Meadows LimitedProperty developers
- Misterton Paddock LimitedProperty developers
- Messingham Fields LimitedProperty developers
- G - Elite Aircraft Detailing LtdCleaning companies
- Epworth Flooring LtdFloor and wall tilers
- Josif Sales LtdMechanics and garages
- RM Home Renovations LtdFloor and wall tilers
Shared registered office
28 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Interlec Group 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 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 10739618
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 April 2017 (9 years ago)
- Registered office
- LN12 Armstrong House First Avenue, Doncaster Finningley Airport, Doncaster, DN9 3GA
- Nature of business
- Repair of electrical equipment (SIC 33140)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 24 April 2026
- Previous names
- Interlec Electrical Contractors Limited (until 22 Jun 2022)
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 Doncaster
Other active machinery repair and installation companies registered in Doncaster.
- Isle Site Services (UK) Ltd2017
- JC & Ac Electrical Ltd2017
- Jetguruuk Ltd2025
- John Sleath Race Cars Limited2003
- Joyce Management Limited2015
- JP Alloy Wheel Refurbishment Limited2022
- JS Elevator Limited2025
- K.D Custom Ltd2019
All machinery repair and installation companies in Doncaster · All trades in Doncaster · Machinery repair and installation across the UK
Frequently asked questions
When are Interlec Group Ltd.'s accounts due?
Interlec Group Ltd.'s next accounts are due at Companies House by 31 January 2028 (in 475 days), covering the period to 30 April 2027.
When is Interlec Group Ltd.'s CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Interlec Group Ltd. still trading?
Interlec Group 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 Interlec Group Ltd. do?
Interlec Group Ltd. is registered under Repair of electrical equipment (SIC 33140).
How old is Interlec Group Ltd.?
Interlec Group Ltd. was incorporated on 25 April 2017, 9 years ago.
Who runs Interlec Group Ltd.?
Interlec Group Ltd. has 1 active director, the longest-serving appointed in Apr 2017. Their names and service addresses are on the Companies House register.
Who owns Interlec Group Ltd.?
2 people or companies have significant control of Interlec Group Ltd.: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Interlec Group 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 Interlec Group 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.