- Companies
- Finishing trades
- London
- Isa Management Ltd
Isa Management Ltd
- Company number
- 16250309
- Incorporated
- 13 Feb 20251 year trading
- Registered office
- Flat 1, 4 London Bridge Street, London, SE1 9SG
- Nature of business
- Other building completion and finishing; Other letting and operating of own or leased real estate
Isa Management Ltd is a 1-year-old private limited company registered in London, company number 16250309, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 13 November 2026, and its first CT600 is due at HMRC on 12 February 2027.
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.
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Where Isa Management Ltd is registered
The registered office is in London (SE1), in the Southwark local authority area, London. Show SE1 9SG on a map.
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What happens if Isa Management 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 13 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Nov 2026 to 13 Dec 2026 | £150 |
| 1 to 3 months late | 14 Dec 2026 to 13 Feb 2027 | £375 |
| 3 to 6 months late | 14 Feb 2027 to 13 May 2027 | £750 |
| More than 6 months late | From 14 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 16250309
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 February 2025 (1 year ago)
- Registered office
- Flat 1, 4 London Bridge Street, London, SE1 9SG
- Nature of business
- Other building completion and finishing (SIC 43390)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 12 February 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in London
Other active building finishing companies registered in London.
- Ise Construction Services Limited2026
- Isg London Ltd2013
- Ish Decor Ltd2020
- Iso Building Ltd2010
- Issa Maintenance Ltd2025
- Istos Constructions Limited2017
- Italporto Shopfitters Limited2010
- Itn Action Ltd2015
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are Isa Management Ltd's accounts due?
Isa Management Ltd's next accounts are due at Companies House by 13 November 2026 (in 31 days), covering the period to 28 February 2026.
When is Isa Management Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 12 February 2026, due by 12 February 2027, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Isa Management Ltd still trading?
Isa Management 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 Isa Management Ltd do?
Isa Management Ltd is registered under Other building completion and finishing (SIC 43390); Other letting and operating of own or leased real estate (SIC 68209).
How old is Isa Management Ltd?
Isa Management Ltd was incorporated on 13 February 2025, 1 year ago.
What is the penalty if Isa Management 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 Isa Management 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.