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  1. Companies
  2. Specialist contractors
  3. London
  4. Alderborne Limited

Alderborne Limited

ActiveNo accounts filed yet accountsSpecialist contractorsLondon
Company number
17491749
Incorporated
30 Sep 2026
Registered office
3RD Floor, 45 Albemarle Street, London, W1S 4JL
Nature of business
Other specialised construction activities n.e.c.; Real estate agencies; Management of real estate on a fee or contract basis; Combined facilities support activities
Accounts due in
627 days
30 Jun 2028
From the Companies House register, 1 Oct 2026

Alderborne Limited is a newly incorporated private limited company registered in London, company number 17491749, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 30 June 2028, and its first CT600 is due at HMRC on 29 September 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
30 Jun 2028
in 627 days
For the period to 30 Sep 2027
CT600 due (first of two)
29 Sep 2028
in 718 days
Period 30 Sep 2026 to 29 Sep 2027
CT600 due (second of two)
30 Sep 2028
in 719 days
Period 30 Sep 2027 to 30 Sep 2027
Corporation tax payment
1 Jul 2028
in 628 days
9 months and 1 day after the period end
Confirmation statement
13 Oct 2027
in 366 days

Is this your company?

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Where Alderborne Limited is registered

Alderborne Limited's registered office on a map of the UK

The registered office is in London (W1S), in the Westminster local authority area, London. Show W1S 4JL on a map.

Other trade companies in W1S

Also registered at this address

17 other companies use the same registered office as Alderborne Limited.

What happens if Alderborne 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 30 June 2028.

Companies HouseAccounts deliveredPenalty
Up to 1 month late1 Jul 2028 to 31 Jul 2028£150
1 to 3 months late1 Aug 2028 to 30 Sep 2028£375
3 to 6 months late1 Oct 2028 to 31 Dec 2028£750
More than 6 months lateFrom 1 Jan 2029£1,500

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

HMRC (CT600)FromPenalty
1 day late1 Oct 2028£200
3 months late30 Dec 2028another £200
6 months late30 Mar 2029HMRC estimates the tax and adds 10% of the unpaid tax
12 months late30 Sep 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
17491749
Status
Active
Company type
Private limited company
Incorporated
30 September 2026
Registered office
3RD Floor, 45 Albemarle Street, London, W1S 4JL
Nature of business
Other specialised construction activities n.e.c. (SIC 43999)
Real estate agencies (SIC 68310)
Management of real estate on a fee or contract basis (SIC 68320)
Combined facilities support activities (SIC 81100)
Year end
30 September (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 London

Other active specialist construction companies registered in London.

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

Frequently asked questions

When are Alderborne Limited's accounts due?

Alderborne Limited's next accounts are due at Companies House by 30 June 2028 (in 627 days), covering the period to 30 September 2027.

When is Alderborne 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 29 September 2027, due by 29 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.

Is Alderborne Limited still trading?

Alderborne 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 Alderborne Limited do?

Alderborne Limited is registered under Other specialised construction activities n.e.c. (SIC 43999); Real estate agencies (SIC 68310); Management of real estate on a fee or contract basis (SIC 68320); Combined facilities support activities (SIC 81100).

How old is Alderborne Limited?

Alderborne Limited was incorporated on 30 September 2026, less than a year ago.

What is the penalty if Alderborne 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 Alderborne 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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