- Companies
- Specialist contractors
- Mitcham
- NG Tunnelling Limited
NG Tunnelling Limited
- Company number
- 09111340
- Incorporated
- 1 Jul 201412 years trading
- Registered office
- Unit 7, Willow Lane Business Park, 1 - 11 Willow Lane, Mitcham, Surrey, CR4 4NA
- Nature of business
- Other specialised construction activities n.e.c.
NG Tunnelling Limited is a 12-year-old private limited company registered in Mitcham, company number 09111340, one of 38 specialist construction companies in Mitcham. Its next accounts are due at Companies House on 28 March 2027, and the CT600 for the period to 28 June 2026 is due at HMRC on 28 June 2027.
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 down £40K (-7.4%) on the year before, to £501K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £989K against £618K owed within a year: 1.6 times cover.
- 5 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £501K | £16K | £989K | £618K | 5 |
| 30 Jun 2024 | £541K | £27K | £914K | £449K | 5 |
| 30 Jun 2023 | £589K | £87K | £1.1M | £549K | 5 |
| 30 Jun 2022 | £329K | £11K | £539K | £358K | 5 |
| 30 Jun 2021 | £761K | £57K | £604K | £155K | 4 |
| 30 Jun 2020 | £880K | £132K | £905K | £215K | 4 |
| 30 Jun 2019 | £1M | £636 | £1.2M | £355K | 4 |
| 30 Jun 2018 | £940K | £1.1M | £322K | 4 | |
| 30 Jun 2017 | £737K | £3,541 | £751K | £111K | |
| 30 Jun 2016 | £349K | £4,089 | £388K | £52K |
Where NG Tunnelling Limited is registered
The registered office is in Mitcham (CR4), in the Merton local authority area, London. Show CR4 4NA on a map.
Other trade companies in CR4
- Mendevo LimitedFloor and wall tilers
- Az Auto Body Repair LtdMechanics and garages
- Welcome Maintenance LimitedPainters and decorators
- Fixmot LtdMechanics and garages
- MPB Property Care LtdFinishing trades
- Aoo Building Services LtdBuilders
- LDN Plumbing Heating and Cooling LimitedPlumbers and heating engineers
- Dgha Construction LtdBuilders
What happens if NG Tunnelling 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 28 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Mar 2027 to 28 Apr 2027 | £150 |
| 1 to 3 months late | 29 Apr 2027 to 28 Jun 2027 | £375 |
| 3 to 6 months late | 29 Jun 2027 to 28 Sep 2027 | £750 |
| More than 6 months late | From 29 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Jun 2027 | £200 |
| 3 months late | 28 Sep 2027 | another £200 |
| 6 months late | 28 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Jun 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
- 09111340
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 July 2014 (12 years ago)
- Registered office
- Unit 7, Willow Lane Business Park, 1 - 11 Willow Lane, Mitcham, Surrey, CR4 4NA
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 June (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 30 June 2026
- Charges (mortgages)
- 2 outstanding of 2 registered
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Mitcham
Other active specialist construction companies registered in Mitcham.
- Otif Ltd2026
- Premier Spaces Limited2020
- Samz Construction Services Ltd2021
- Scott Marshall Associates Ltd2020
- SGS 85 Limited2017
- Sofia Building Contractor Ltd2020
- Southbank Rope Access Ltd2015
- Standard Deviation Ltd2012
All specialist construction companies in Mitcham · All trades in Mitcham · Specialist contractors across the UK
Frequently asked questions
When are NG Tunnelling Limited's accounts due?
NG Tunnelling Limited's next accounts are due at Companies House by 28 March 2027 (in 166 days), covering the period to 28 June 2026.
When is NG Tunnelling Limited's CT600 due?
The CT600 for the period to 28 June 2026 is due at HMRC by 28 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 March 2027.
Is NG Tunnelling Limited still trading?
NG Tunnelling 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 NG Tunnelling Limited do?
NG Tunnelling Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is NG Tunnelling Limited?
NG Tunnelling Limited was incorporated on 1 July 2014, 12 years ago.
What is the penalty if NG Tunnelling 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 NG Tunnelling 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.