- Companies
- Specialist contractors
- Pontypridd
- Spectrum Construction Services Ltd
Company profile · Specialist contractors
Spectrum Construction Services Ltd
Spectrum Construction Services Ltd is a 7-year-old private limited company registered in Pontypridd, company number 12013687, one of 34 specialist construction companies in Pontypridd. 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
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 Spectrum 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.
Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Spectrum Construction Services Ltd over the years
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 £184K (+153.3%) on the year before, to £304K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £769K against £491K owed within a year: 1.6 times cover.
- 2 employees on average, up from 0 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 Mar 2025 | £304K | £226K | £769K | £491K | 2 |
| 31 Mar 2024 | £120K | £65K | £467K | £359K | 0 |
| 31 Mar 2023 | £60K | £7,982 | £212K | £155K | 0 |
| 31 May 2022 | £79K | £78K | £161K | £82K | 0 |
| 31 May 2021 | £59K | £39K | £99K | £41K | 0 |
| 31 May 2020 | £0 | 0 |
Public contracts won
Spectrum Construction Services Ltd has one public sector contract award on record; the ones with their own published value total £114K (2025). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Rhondda Cynon Taf CBC | Ysgol Nant Gwyn - Changing Room Refurbishment | £114K | 17 Jul 2025 |
Where Spectrum Construction Services Ltd is registered
The registered office is in Pontypridd (CF37), in the Rhondda Cynon Taf local authority area, Wales. Show CF37 1DZ on a map.
Other trade companies in CF37
- Hamilton Motor Group LtdMotor traders
- Pencoed Building Services LtdSpecialist contractors
- Pyo Property Developments LimitedBuilders
- Great Choice Leisure Vehicles LimitedMotor traders
- C2 Interior Contractors LtdBuilders
- Carpet Mine LtdFinishing trades
- LCH4RP LtdProperty developers
- LCH4Est LtdProperty developers
What happens if Spectrum 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 12013687
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 May 2019 (7 years ago)
- Registered office
- Unit 4, Room 5 Num, Maritime Offices, Woodland Terrace, Maesycoed, Pontypridd, CF37 1DZ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 22 May 2026
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 Pontypridd
Other active specialist construction companies registered in Pontypridd.
- Stellar Fitout Contractors Ltd2013
- Stuart Richardson Consultancy Ltd2026
- Summit Projects Solutions Ltd2025
- T3 Project Management & Delivery Ltd2022
- Tollhurst Limited1990
- TPG Group Holdings Ltd2015
- Trailcraft MTB and BMX Track Construction Ltd2013
- Williams Firewood Ltd2026
All specialist construction companies in Pontypridd · All trades in Pontypridd · Specialist contractors across the UK
Frequently asked questions
When are Spectrum Construction Services Ltd's accounts due?
Spectrum Construction Services Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Spectrum Construction Services Ltd'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 Spectrum Construction Services Ltd still trading?
Spectrum 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 Spectrum Construction Services Ltd do?
Spectrum Construction Services Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Spectrum Construction Services Ltd?
Spectrum Construction Services Ltd was incorporated on 23 May 2019, 7 years ago.
Has Spectrum Construction Services Ltd won public sector contracts?
Yes. Spectrum Construction Services Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £114K), most recently from Rhondda Cynon Taf CBC.
What is the penalty if Spectrum 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 Spectrum 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.