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  4. Black Mesa Engineering Limited

Black Mesa Engineering Limited

ActiveTotal exemption (full) accountsSpecialist contractorsRichmond
Company number
15790320
Incorporated
20 Jun 20242 years trading
Registered office
68 Queens Road, Richmond, TW10 6LB
Nature of business
Other specialised construction activities n.e.c.
Accounts due in
170 days
31 Mar 2027
Net assets
£1,005
At 30 Jun 2025
Cash at bank
£1,475
At 30 Jun 2025
Employees
2
Average during the year
From the Companies House register, 1 Oct 2026

Black Mesa Engineering Limited is a 2-year-old private limited company registered in Richmond, company number 15790320, one of 42 specialist construction companies in Richmond. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 2027.

Key dates

Worked out from the year end and filing history on the Companies House register.

Accounts due
31 Mar 2027
in 170 days
For the period to 30 Jun 2026
CT600 due
30 Jun 2027
in 261 days
Period 1 Jul 2025 to 30 Jun 2026
Corporation tax payment
1 Apr 2027
in 171 days
9 months and 1 day after the period end
Confirmation statement
3 Jul 2027
in 264 days
Last made up to 19 Jun 2026

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Financial snapshot, 2025

From the balance sheet at 30 June 2025, as filed at Companies House.

Net assets
£1,005
Cash at bank
£1,475
Current assets
£1,475
Employees
2
Average during the year, including directors

Where Black Mesa Engineering Limited is registered

Black Mesa Engineering Limited's registered office on a map of the UK

The registered office is in Richmond (TW10), in the Richmond upon Thames local authority area, London. Show TW10 6LB on a map.

Other trade companies in TW10

What happens if Black Mesa Engineering 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 31 March 2027.

Companies HouseAccounts deliveredPenalty
Up to 1 month late1 Apr 2027 to 30 Apr 2027£150
1 to 3 months late1 May 2027 to 30 Jun 2027£375
3 to 6 months late1 Jul 2027 to 30 Sep 2027£750
More than 6 months lateFrom 1 Oct 2027£1,500

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

HMRC (CT600)FromPenalty
1 day late1 Jul 2027£200
3 months late30 Sep 2027another £200
6 months late30 Dec 2027HMRC estimates the tax and adds 10% of the unpaid tax
12 months late30 Jun 2028another 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
15790320
Status
Active
Company type
Private limited company
Incorporated
20 June 2024 (2 years ago)
Registered office
68 Queens Road, Richmond, TW10 6LB
Nature of business
Other specialised construction activities n.e.c. (SIC 43999)
Year end
30 June (accounting reference date)
Accounts type
Total exemption (full)
Last accounts made up to
30 June 2025
Last confirmation statement
19 June 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 Richmond

Other active specialist construction companies registered in Richmond.

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

Frequently asked questions

When are Black Mesa Engineering Limited's accounts due?

Black Mesa Engineering Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.

When is Black Mesa Engineering Limited's CT600 due?

The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.

Is Black Mesa Engineering Limited still trading?

Black Mesa Engineering 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 Black Mesa Engineering Limited do?

Black Mesa Engineering Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).

How old is Black Mesa Engineering Limited?

Black Mesa Engineering Limited was incorporated on 20 June 2024, 2 years ago.

What is the penalty if Black Mesa Engineering 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 Black Mesa Engineering 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.

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