# BLAKISTON UPSTREAM DEVELOPMENTS LIMITED (11211691)

> BLAKISTON UPSTREAM DEVELOPMENTS LIMITED is an active private limited company (company number 11211691) incorporated on 19 February 2018, registered in London. Its registered activity is support activities for petroleum and natural gas mining (SIC 09100). Latest small accounts cover the period ending 30 April 2026, showing net assets of £24k and cash of £28k, with 2 employees on average. Net assets fell 74% on the prior period (£90k). Across the last 3 periods on record the net-asset trend is volatile.

- Status: Active
- Incorporated: 2018-02-19
- Registered office: London, W4 2NA
- SIC 09100: Support activities for petroleum and natural gas mining
- SIC 70229: Management consultancy activities other than financial management
- Next accounts due: 2028-01-30
- Confirmation statement due: 2027-03-05
- Accounts type: TOTAL EXEMPTION FULL

By net assets it sits in the upper half of 228 comparable companies in London (median £1,144, upper quartile £70k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2026-04-30 | £24k | £28k | — | £9,107 | — | — | 2 |
| 2025-04-30 | £90k | £93k | — | £11k | — | — | 2 |
| 2024-04-30 | £73k | £75k | — | £7,798 | — | — | 2 |

current ratio 3.27; net assets trend volatile; size band micro.

## Filing and accounts signals (facts, not a rating)

- Net assets above zero: Net assets £23,866 at 30 April 2026
- Net assets down 25% or more on the prior period: -73.6% vs prior period
- Current assets at least 1.5× creditors within one year: Current ratio 3.27
- Three or more accounting periods on record: 3 periods on record
- Incorporated five or more years ago: Incorporated 19 February 2018

How each signal is derived: https://firmoscan.com/methodology

## Persons with significant control

- Dr Willem Simon Tortike — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2018-02-19

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Source: Companies House register snapshot 2026-08-31, Open Government Licence v3.0. Information may have changed since that date and is not advice or a credit reference; check the official record before relying on it. Official record: https://find-and-update.company-information.service.gov.uk/company/11211691
HTML: https://firmoscan.com/company/11211691-blakiston-upstream-developments-limited