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  4. Neptune Dunlop Limited

Neptune Dunlop Limited

ActiveNo accounts filed yet accountsProperty developersHillsborough
Company number
NI731376
Incorporated
15 Jul 20251 year trading
Registered office
13 Main Street, Hillsborough, BT26 6AE
Nature of business
Development of building projects
Accounts due in
78 days
31 Dec 2026
From the Companies House register, 1 Oct 2026

Neptune Dunlop Limited is a 1-year-old private limited company registered in Hillsborough, company number NI731376, one of 23 property development companies in Hillsborough. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.

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.

Accounts due
31 Dec 2026
in 78 days
For the period to 31 Mar 2026
CT600 due
31 Mar 2027
in 168 days
Period 15 Jul 2025 to 31 Mar 2026
Corporation tax payment
1 Jan 2027
in 79 days
9 months and 1 day after the period end
Confirmation statement
28 Jul 2027
in 287 days
Last made up to 14 Jul 2026

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Where Neptune Dunlop Limited is registered

Neptune Dunlop Limited's registered office on a map of the UK

The registered office is in Hillsborough (BT26), in the Lisburn and Castlereagh local authority area, Northern Ireland. Show BT26 6AE on a map.

Other trade companies in BT26

Also registered at this address

8 other companies use the same registered office as Neptune Dunlop Limited.

What happens if Neptune Dunlop 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 31 December 2026.

Companies HouseAccounts deliveredPenalty
Up to 1 month late1 Jan 2027 to 31 Jan 2027£150
1 to 3 months late1 Feb 2027 to 31 Mar 2027£375
3 to 6 months late1 Apr 2027 to 30 Jun 2027£750
More than 6 months lateFrom 1 Jul 2027£1,500

Penalties double if the accounts were also late the year before.

HMRC (CT600)FromPenalty
1 day late1 Apr 2027£200
3 months late30 Jun 2027another £200
6 months late30 Sep 2027HMRC estimates the tax and adds 10% of the unpaid tax
12 months late31 Mar 2028another 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
NI731376
Status
Active
Company type
Private limited company
Incorporated
15 July 2025 (1 year ago)
Registered office
13 Main Street, Hillsborough, BT26 6AE
Nature of business
Development of building projects (SIC 41100)
Year end
31 March (accounting reference date)
Accounts type
No accounts filed yet
Last confirmation statement
14 July 2026

Filing notes for property development companies

Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.

Similar companies in Hillsborough

Other active property development companies registered in Hillsborough.

All property development companies in Hillsborough · All trades in Hillsborough · Property developers across the UK

Frequently asked questions

When are Neptune Dunlop Limited's accounts due?

Neptune Dunlop Limited's next accounts are due at Companies House by 31 December 2026 (in 78 days), covering the period to 31 March 2026.

When is Neptune Dunlop Limited's CT600 due?

The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.

Is Neptune Dunlop Limited still trading?

Neptune Dunlop 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 Neptune Dunlop Limited do?

Neptune Dunlop Limited is registered under Development of building projects (SIC 41100).

How old is Neptune Dunlop Limited?

Neptune Dunlop Limited was incorporated on 15 July 2025, 1 year ago.

What is the penalty if Neptune Dunlop 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 Neptune Dunlop Limited on Companies House for filed documents, officers and the full history.

Report an error on this page

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.

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