£24k
−74%vs Apr 2025Active11211691Private limited companyLondon
BLAKISTON UPSTREAM DEVELOPMENTS LIMITED
Significant control: Willem Simon Tortike (75–100%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
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Registered activity: Support activities for petroleum and natural gas mining (SIC 09100). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
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.
Peer position · net assets
By net assets it sits in the upper half of 228 comparable companies in London (median £1,144, upper quartile £70k).
02
Ownership and control
- Dr Willem Simon Tortike
- 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. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 19 February 20188 yrs ago
- Next accounts due
- 30 January 2028in 464 days
- Confirmation statement due
- 5 March 2027in 133 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 09100
- Support activities for petroleum and natural gas mining
- SIC 70229
- Management consultancy activities other than financial management
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£28k
−70%vs Apr 2025Not reported
2
No changevs Apr 2025| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 April 2026 | £24k | £28k | — | £9,107 | — | — | 2 |
| 30 April 2025 | £90k | £93k | — | £11k | — | — | 2 |
| 30 April 2024 | £73k | £75k | — | £7,798 | — | — | 2 |
Current ratio3.27Current assets ÷ creditors within one year
Cash per employee£14kCash ÷ average employees
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
06
Filing and accounts signals
- Net assets above zeroNet 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 yearCurrent ratio 3.27
- Three or more accounting periods on record3 periods on record
- Incorporated five or more years agoIncorporated 19 February 2018
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Next accounts duein 464 days
- Confirmation statement duein 133 days
- Accounts period endNet assets £24k · small accounts
- Accounts period endNet assets £90k · small accounts
- Accounts period endNet assets £73k · small accounts
- Incorporated
08
Similar companies in London
- QUADRIGA ENERGY LIMITEDLondon · inc. Feb 2018
- STENA DON DRILLING LIMITEDLondon · inc. Feb 2018
- A. J. TWYNAM CONSULTANCY SERVICES LTD.London · inc. Feb 2018
- VOLTRIG INC LTDLondon · inc. Mar 2018
- PAUL MCMONAGLE MECHANICAL CONTRACTING LIMITEDLondon · inc. Mar 2018
- DK PETROLEUM LIMITEDLondon · inc. Mar 2018
All companies incorporated on 19 February 2018 · in Feb 2018.
09
Reminders for BLAKISTON UPSTREAM DEVELOPMENTS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.