PricingHow It WorksWebsites
CT600 FilingCompanies House AccountsCompany Deadlines LookupWhat You Need to FileSelf AssessmentCIS ReturnsMaking Tax DigitalFree Tax Calculators
YappazineFree Tax CalculatorsHelp CentreFAQSupportOur Infrastructure
Jobs & leadsStripeMeta Lead AdsWhatsApp AITelegram
Tax filingHMRC (MTD)
Works with bothXeroQuickBooks
AboutPartner APIContactSecurityPrivacy PolicyTerms of Service
  1. Companies
  2. Specialist contractors
  3. Treorchy
  4. Coresafe Environmental Limited

Coresafe Environmental Limited

ActiveNo accounts filed yet accountsSpecialist contractorsTreorchy
Company number
17159253
Incorporated
15 Apr 2026
Registered office
77 Bute Street, Treorchy, Rhondda Cynon Taff, CF42 6AH
Nature of business
Other specialised construction activities n.e.c.
Accounts due in
459 days
15 Jan 2028
From the Companies House register, 1 Oct 2026

Coresafe Environmental Limited is a newly incorporated private limited company registered in Treorchy, company number 17159253, one of 6 specialist construction companies in Treorchy. Its next accounts are due at Companies House on 15 January 2028, and its first CT600 is due at HMRC on 14 April 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.

Accounts due
15 Jan 2028
in 459 days
For the period to 30 Apr 2027
CT600 due (first of two)
14 Apr 2028
in 549 days
Period 15 Apr 2026 to 14 Apr 2027
CT600 due (second of two)
30 Apr 2028
in 565 days
Period 15 Apr 2027 to 30 Apr 2027
Corporation tax payment
1 Feb 2028
in 476 days
9 months and 1 day after the period end
Confirmation statement
28 Apr 2027
in 197 days

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 Coresafe Environmental Limited

Or 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 Coresafe Environmental Limited is registered

Coresafe Environmental Limited's registered office on a map of the UK

The registered office is in Treorchy (CF42), in the Rhondda Cynon Taf local authority area, Wales. Show CF42 6AH on a map.

Other trade companies in CF42

Also registered at this address

22 other companies use the same registered office as Coresafe Environmental Limited.

What happens if Coresafe Environmental 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 15 January 2028.

Companies HouseAccounts deliveredPenalty
Up to 1 month late16 Jan 2028 to 15 Feb 2028£150
1 to 3 months late16 Feb 2028 to 15 Apr 2028£375
3 to 6 months late16 Apr 2028 to 15 Jul 2028£750
More than 6 months lateFrom 16 Jul 2028£1,500

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

HMRC (CT600)FromPenalty
1 day late1 May 2028£200
3 months late30 Jul 2028another £200
6 months late30 Oct 2028HMRC estimates the tax and adds 10% of the unpaid tax
12 months late30 Apr 2029another 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
17159253
Status
Active
Company type
Private limited company
Incorporated
15 April 2026
Registered office
77 Bute Street, Treorchy, Rhondda Cynon Taff, CF42 6AH
Nature of business
Other specialised construction activities n.e.c. (SIC 43999)
Year end
30 April (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 Treorchy

Other active specialist construction companies registered in Treorchy.

All specialist construction companies in Treorchy · All trades in Treorchy · Specialist contractors across the UK

Frequently asked questions

When are Coresafe Environmental Limited's accounts due?

Coresafe Environmental Limited's next accounts are due at Companies House by 15 January 2028 (in 459 days), covering the period to 30 April 2027.

When is Coresafe Environmental Limited's CT600 due?

The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 14 April 2027, due by 14 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.

Is Coresafe Environmental Limited still trading?

Coresafe Environmental 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 Coresafe Environmental Limited do?

Coresafe Environmental Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).

How old is Coresafe Environmental Limited?

Coresafe Environmental Limited was incorporated on 15 April 2026, less than a year ago.

What is the penalty if Coresafe Environmental 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 Coresafe Environmental 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.

File accounts + CT600File now£49Let's talk