- Companies
- Installers
- Merthyr Tydfil
- Tier 1 Construction Services Ltd
Tier 1 Construction Services Ltd
- Company number
- 11979359
- Incorporated
- 3 May 20197 years trading
- Registered office
- Unit 8 Old Reddifusion Building, Bryniau Road, Merthyr Tydfil, CF48 2SR
- Nature of business
- Other construction installation
Tier 1 Construction Services Ltd is a 7-year-old private limited company registered in Merthyr Tydfil, company number 11979359, one of 10 installation companies (insulation, lifts, shutters and similar) in Merthyr Tydfil. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 2027.
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 Tier 1 Construction Services 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.
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 up £63K (+127.4%) on the year before, to £112K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £286K against £203K owed within a year: 1.4 times cover.
- 5 employees on average, down from 8 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £112K | £171K | £286K | £203K | 5 |
| 31 May 2024 | £49K | £47K | £171K | £135K | 8 |
| 31 May 2023 | £57K | £86K | £165K | £113K | 6 |
| 31 May 2022 | £30K | £25K | £148K | £106K | 6 |
| 31 May 2021 | £10K | £80K | £49K | 4 | |
| 31 May 2020 | £1,340 | £54K | £3,843 | 2 |
Where Tier 1 Construction Services Ltd is registered
The registered office is in Merthyr Tydfil (CF48), in the Merthyr Tydfil local authority area, Wales. Show CF48 2SR on a map.
Other trade companies in CF48
- Valley Roofing Building & Carpentry LimitedRoofers
- Ajl Rail/Civil Engineering LtdCivil engineering
- M&K Valeting LtdCleaning companies
- Mdgroundworks LtdGroundworks and demolition
- Craig Lloyd Groundworks LtdCivil engineering
- Noarc Electrical LtdElectricians
- Elt Brickwork LimitedBuilders
- JBH Decorating LimitedPainters and decorators
What happens if Tier 1 Construction Services 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 11979359
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 May 2019 (7 years ago)
- Registered office
- Unit 8 Old Reddifusion Building, Bryniau Road, Merthyr Tydfil, CF48 2SR
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 2 May 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Merthyr Tydfil
Other active installation companies (insulation, lifts, shutters and similar) registered in Merthyr Tydfil.
- Woodtech Construction Ltd2023
- Amber & Ruby Developments Limited2017
- Envision Contractors Ltd2023
- Jodan Contracts Limited2015
- M & S Roller Shutter Doors Limited2008
- Maintenance Matters Merthyr Ltd2026
- Minerva Construction (UK) Ltd2017
- Phoenix Fencing & Construction Ltd2021
All installation companies (insulation, lifts, shutters and similar) in Merthyr Tydfil · All trades in Merthyr Tydfil · Installers across the UK
Frequently asked questions
When are Tier 1 Construction Services Ltd's accounts due?
Tier 1 Construction Services Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Tier 1 Construction Services Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Tier 1 Construction Services Ltd still trading?
Tier 1 Construction Services 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 Tier 1 Construction Services Ltd do?
Tier 1 Construction Services Ltd is registered under Other construction installation (SIC 43290).
How old is Tier 1 Construction Services Ltd?
Tier 1 Construction Services Ltd was incorporated on 3 May 2019, 7 years ago.
What is the penalty if Tier 1 Construction Services 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 Tier 1 Construction Services 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.