Firmoscan
Active13703789Private limited companyLondon

BUILDSIM LTD

E31/100

Owned by Seyed Masoud Tabatabaei Sameni (75–100%)

Companies HouseCompanies House
01

Summary

Generated from filed data · no estimates

BUILDSIM LTD is an active private limited company (company number 13703789) incorporated on 26 October 2021, registered in London. Its registered activity is other engineering activities (SIC 71129). Latest dormant accounts cover the period ending 31 October 2025, showing net assets of −£240 and cash of £914, with 0 employees on average. Net assets were unchanged on the prior period.

Peer position · net assets

By net assets it sits in the bottom quarter of 1,655 comparable companies in London (median £4,206, upper quartile £48k).

02

Key dates

Incorporated
26 October 20214 yrs ago
Next accounts due
31 July 2027in 282 days
Confirmation statement due
9 November 2026in 18 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

03

Activity

SIC 71129
Other engineering activities
Accounts type
Dormant
Size band
MicroCompanies Act thresholds
04

Financials

2 periods on record · latest ending 31 October 2025
Net assets
−£240
vs Oct 2024
Cash at bank
£914
No changevs Oct 2024
Turnover
Not reported
Employees
0
vs Oct 2024
Net assets
−£240
Cash at bank
£914
Filed accounts by period, newest first
Period endNet assetsCashDebtorsCreditors <1yTurnoverProfitEmployees
31 October 2025−£240£914—£1,154——0
31 October 2024−£240£914—£1,154——0
Current ratio0.79Current liabilities exceed current assets

Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.

05

Firmoscan score

Rules-based · every point shows its evidence
31 / 100 · grade E
EDCBA
Score breakdown
50Starting scoreEvery scored company starts here
−15Negative net assetsNet assets £-240 at 2025-10-31
−8Current liabilities exceed current assetsCurrent ratio 0.79
+4Past first filingsIncorporated 2021-10-26
31Score, grade E

A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice. How the score is computed.

06

Ownership and control

1 active
  • Mr Seyed Masoud Tabatabaei Sameni
    Individual · since 26 October 2021
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.

07

Timeline

Newest first
  1. Next accounts duein 282 days
  2. Confirmation statement duein 18 days
  3. Accounts period endNet liabilities £240 · dormant accounts
  4. Accounts period endNet liabilities £240 · dormant accounts
  5. Incorporated
08

Similar companies in London

Same activity (other engineering activities), closest in incorporation date

All companies incorporated on 26 October 2021 · in Oct 2021.

09

Reminders for BUILDSIM LTD

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.