- Companies
- Specialist contractors
- Southsea
- RM Roundhouse Ltd
RM Roundhouse Ltd
- Company number
- 15271224
- Incorporated
- 9 Nov 20232 years trading
- Registered office
- 29 Waterloo Street, Southsea, PO5 4HR
- Nature of business
- Other specialised construction activities n.e.c.; Temporary employment agency activities
RM Roundhouse Ltd is a 2-year-old private limited company registered in Southsea, company number 15271224, one of 38 specialist construction companies in Southsea. Its next accounts are due at Companies House on 30 November 2026, and its first CT600 is due at HMRC on 30 November 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the 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 RM Roundhouse 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.
Financial snapshot, 2024
From the balance sheet at 30 November 2024, as filed at Companies House.
Where RM Roundhouse Ltd is registered
The registered office is in Southsea (PO5), in the Portsmouth local authority area, South East. Show PO5 4HR on a map.
Other trade companies in PO5
- Fixnova LtdRepair services
- Luxury Resin Floors and Media Walls LtdBuilders
- Pretty Unique Cleaning Services LtdCleaning companies
- Bay Bricks LtdProperty developers
- Blydan Holdings LimitedProperty developers
- Inside Out Developments Southampton LtdBuilders
- Hampshire Car Hire LtdMechanics and garages
- Baynes Wipers LtdMachinery repair and installation
What happens if RM Roundhouse 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 15271224
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 November 2023 (2 years ago)
- Registered office
- 29 Waterloo Street, Southsea, PO5 4HR
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Temporary employment agency activities (SIC 78200) - Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 8 November 2025
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 Southsea
Other active specialist construction companies registered in Southsea.
- Rowlands Castle Construction (Southern) Limited2025
- Serenity Lifting Ltd2025
- Southern Aerial (Communications) Limited1981
- Underground Power Cables Ltd2024
- Vyomir Limited2021
- Westcote Heritage Ltd2020
- White Property Maintenance Limited2012
- Whyteleafe Paving Company Ltd2002
All specialist construction companies in Southsea · All trades in Southsea · Specialist contractors across the UK
Frequently asked questions
When are RM Roundhouse Ltd's accounts due?
RM Roundhouse Ltd's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is RM Roundhouse 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 30 November 2025, due by 30 November 2026, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is RM Roundhouse Ltd still trading?
RM Roundhouse 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 RM Roundhouse Ltd do?
RM Roundhouse Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); Temporary employment agency activities (SIC 78200).
How old is RM Roundhouse Ltd?
RM Roundhouse Ltd was incorporated on 9 November 2023, 2 years ago.
What is the penalty if RM Roundhouse 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 RM Roundhouse 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.