- Companies
- Specialist contractors
- Plymouth
- Sound Structural Ltd
Company profile · Specialist contractors
Sound Structural Ltd
Sound Structural Ltd is a newly incorporated private limited company registered in Plymouth, company number 17277539, one of 113 specialist construction companies in Plymouth. Its next accounts are due at Companies House on 17 March 2028, and its first CT600 is due at HMRC on 16 June 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 Sound Structural 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 Sound Structural Ltd is registered
The registered office is in Plymouth (PL7), in the Plymouth local authority area, South West. Show PL7 1TD on a map.
Other trade companies in PL7
- Taurus Scaffolding SW LimitedScaffolders
- Devon German Motor Works LtdMechanics and garages
- Wae LimitedProperty developers
- Munera Construction LtdInstallers
- Vision Retail (Southern) LimitedProperty developers
- Moor to Coast Electrical Services SW LtdElectricians
- Great White Estates LtdProperty developers
- Opus Facilities Solutions LtdCleaning companies
Also registered at this address
1 other company uses the same registered office as Sound Structural Ltd.
- Andrew James Mudge LtdFinishing trades
What happens if Sound Structural 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 17 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Mar 2028 to 17 Apr 2028 | £150 |
| 1 to 3 months late | 18 Apr 2028 to 17 Jun 2028 | £375 |
| 3 to 6 months late | 18 Jun 2028 to 17 Sep 2028 | £750 |
| More than 6 months late | From 18 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 17277539
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 June 2026
- Registered office
- 128 Underwood Road, Plymouth, PL7 1TD
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
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 Plymouth
Other active specialist construction companies registered in Plymouth.
- South Devon Fencing Limited2024
- South West Concrete Repairs Limited1997
- Southcokitchensandcarpentry Ltd2025
- Southwest Rentals & Maintenance Ltd2026
- Southwest Screeding Solutions Ltd2018
- Steve Lamb Pipefitting Limited2003
- Stonehouse Manufacturing and Retail Limited2020
- Super Dry Roofing & Building Services Ltd2013
All specialist construction companies in Plymouth · All trades in Plymouth · Specialist contractors across the UK
Frequently asked questions
When are Sound Structural Ltd's accounts due?
Sound Structural Ltd's next accounts are due at Companies House by 17 March 2028 (in 522 days), covering the period to 30 June 2027.
When is Sound Structural 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 16 June 2027, due by 16 June 2028, and one for the period to 30 June 2027, due by 30 June 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sound Structural Ltd still trading?
Sound Structural 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 Sound Structural Ltd do?
Sound Structural Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Sound Structural Ltd?
Sound Structural Ltd was incorporated on 17 June 2026, less than a year ago.
What is the penalty if Sound Structural 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 Sound Structural 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.