- Companies
- Electricians
- Plymouth
- NPN Systems Ltd
NPN Systems Ltd
- Company number
- 17083913
- Incorporated
- 10 Mar 2026
- Registered office
- 55 Shakespeare Road, Plymouth, PL5 3JT
- Nature of business
- Electrical installation; Security systems service activities
NPN Systems Ltd is a newly incorporated private limited company registered in Plymouth, company number 17083913, one of 124 electrical contractors in Plymouth. Its next accounts are due at Companies House on 10 December 2027, and its first CT600 is due at HMRC on 9 March 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.
Is this your company?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for NPN Systems LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Where NPN Systems Ltd is registered
The registered office is in Plymouth (PL5), in the Plymouth local authority area, South West. Show PL5 3JT on a map.
Other trade companies in PL5
- KLB Cleaning and Garden Maintenance LtdFinishing trades
- LCR.Rigging LtdSpecialist contractors
- Herzog Roofing & Leadworks LtdRoofers
- Woodfix Master LtdJoiners and carpenters
- SR Plumbing SW LtdPlumbers and heating engineers
- West Country Energy Services LtdPlumbers and heating engineers
- Ar Carpet An Flooring LtdFloor and wall tilers
- Power Pulse Cleaning LtdCleaning companies
What happens if NPN Systems 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 10 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Dec 2027 to 10 Jan 2028 | £150 |
| 1 to 3 months late | 11 Jan 2028 to 10 Mar 2028 | £375 |
| 3 to 6 months late | 11 Mar 2028 to 10 Jun 2028 | £750 |
| More than 6 months late | From 11 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 17083913
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 March 2026
- Registered office
- 55 Shakespeare Road, Plymouth, PL5 3JT
- Nature of business
- Electrical installation (SIC 43210)
Security systems service activities (SIC 80200) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Plymouth
Other active electrical contractors registered in Plymouth.
- Ocean Electrics South West Ltd2014
- Ocean M&E Services Ltd2016
- Olympia Electrical Ltd2021
- Osas Global Services Limited2025
- Outersight (UK) Limited2005
- Parrott Construction Services Limited2008
- PBW Electrics Ltd2018
- Pjo Services Ltd2018
All electrical contractors in Plymouth · All trades in Plymouth · Electricians across the UK
Frequently asked questions
When are NPN Systems Ltd's accounts due?
NPN Systems Ltd's next accounts are due at Companies House by 10 December 2027 (in 423 days), covering the period to 31 March 2027.
When is NPN Systems Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 9 March 2027, due by 9 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is NPN Systems Ltd still trading?
NPN Systems 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 NPN Systems Ltd do?
NPN Systems Ltd is registered under Electrical installation (SIC 43210); Security systems service activities (SIC 80200).
How old is NPN Systems Ltd?
NPN Systems Ltd was incorporated on 10 March 2026, less than a year ago.
What is the penalty if NPN Systems 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 NPN Systems 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.