SID8521 LTD
Company number 09789132 · Active (Active - Proposal to Strike off)
SID8521 LTD is a private limited company registered in LONDON, United Kingdom, incorporated on 22 Sep 2015. Its registered activity is construction of railways and underground railways. Its latest published accounts for the period ending 31 Mar 2022 show equity of £11k. It has filed 4 sets of accounts, 3 of them after the deadline. Our model estimates a 0.72 % probability that it becomes insolvent within 12 months, 6.2 times the average for active companies (very high risk).
Insolvency risk, next 12 months
Higher than 97 % of active companies in the United Kingdom. 6.2× the average annual insolvency rate (0.12 %).
Raises the risk
Lowers the risk
Nothing notable.
Each factor compares companies in the same group (for example the same age band) with the average. The score is a statistical estimate from public data (model AUC 0.99, trained 8 Nov 2026), not a credit rating. How it works.
Company details
- Company number
- 09789132 · official register
- Status
- Active - Proposal to Strike off
- Legal form
- Private Limited Company
- Incorporated
- 22 Sep 2015 (11 years)
- Registered address
- E17 3LT LONDON
- Postcode area
- London East
- Activity
- 42120 Construction of railways and underground railways
- Industry
- Civil engineering
- Accounts overdue
- Yes
Insolvency and register events
No insolvency or liquidation events on record.
Annual accounts GBP
| Period end | Published | Turnover | Result | Equity | Total assets | Current liabilities | Cash | Employees |
|---|---|---|---|---|---|---|---|---|
| 31 Mar 2022 | 15 Jul 2023 | – | – | £11k | – | £39k | £51k | 2 |
| 31 Mar 2021 | 15 Feb 2022 | – | – | £31k | – | £40k | £71k | 2 |
| 31 Mar 2020 | 15 Sep 2020 | – | – | £26k | – | £4,216 | £30k | 1 |
| 31 Mar 2019 | 15 May 2020 | – | – | £61 | £3,920 | £3,981 | – | 1 |
As published. Small companies often file a balance sheet only, so turnover and result can be missing.
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Questions about SID8521 LTD
What is the company number of SID8521 LTD?
SID8521 LTD is registered under company number 09789132 in the official register of United Kingdom. View it at the official register.
Is SID8521 LTD still active?
Yes. SID8521 LTD is registered as active (status: Active - Proposal to Strike off).
Has SID8521 LTD gone bankrupt or into insolvency?
No insolvency, bankruptcy or administration is recorded for SID8521 LTD in the official data.
How likely is SID8521 LTD to become insolvent?
Our model estimates a 0.72 % probability that SID8521 LTD becomes insolvent within the next 12 months (very high risk). That is higher than 97 % of active companies in the United Kingdom.
When was SID8521 LTD founded?
SID8521 LTD was incorporated on 22 Sep 2015.
Where is SID8521 LTD registered?
SID8521 LTD's registered address is in E17 3LT LONDON (London East), United Kingdom.
What do the latest accounts of SID8521 LTD show?
The latest published accounts (period ending 31 Mar 2022) show equity of £11k, 2 employees.
Data: Companies House – Free Company Data Product, Accounts Data Product, Public Data API (Contains public sector information licensed under the Open Government Licence v3.0.). Last updated 8 Nov 2026.