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Cash

£148k

lowest in 5 filed years

Net assets

£4.2m

highest in 5 filed years

Employees

183

highest in 5 filed years

Profit before tax

£2.4k

Period ending 2025-12-31

Watchouts

Facts from the Companies House register and the latest accounts — not a rating

Accounts

5-year trend · Δ = latest vs prior filed period · latest reflected 2025-12-31

Metric Trend 2021-03-312022-03-312024-03-312024-12-312025-12-31 Δ vs prior
Turnover £4,634,207£8,500,121£12,190,574£10,097,555£16,628,112 —
Operating profit £303,676£737,545£1,106,757£784,228£86,442 —
Profit before tax £298,680£965,921£967,272£713,363£2,401 —
Net profit £286,265£1,055,911£1,111,577£732,036-£78,352 —
Cash £607,929£548,430£284,681£787,275£147,900 —
Total assets less current liabilities £4,522,845£4,768,629£4,378,189£4,653,652£6,999,598 —
Net assets £2,717,488£3,293,399£3,292,438£3,792,365£4,201,654 —
Equity £2,717,488£3,293,399£3,292,438£3,792,365£4,201,654 —
Average employees 83100120126183 —
Wages £2,734,645£3,939,867£6,174,660£4,470,373£8,535,615 —
Directors' remuneration £91,682£283,162£363,184£274,377£367,557 —
Highest paid director ——£106,000£84,375£115,031 —

Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. The Δ column is the change from the prior filed period as a percentage of |prior|; lines a company doesn't report show —. Year-on-year comparison hidden: this filing covers about 12 months versus 9 months prior. About these numbers

Ratios

Computed from the line items above — sparklines read oldest → newest

Ratio Trend 2021-03-312022-03-312024-03-312024-12-312025-12-31
Operating margin 6.6%8.7%9.1%7.8%0.5%
Net margin 6.2%12.4%9.1%7.2%-0.5%
Return on capital employed 6.7%15.5%25.3%16.9%1.2%
Gearing (liabilities / total assets) 44.0%37.0%45.4%40.1%61.1%
Current ratio ——2.02x1.95x1.39x
Interest cover 60.78x18.07x8.98x11.13x0.87x

Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.

Audit & accounting basis

Accounting basis
FRS 102
Reporting scope
Consolidated group
Auditor
Salisbury & Company Business Solutions Limited
Audit opinion
Unqualified (clean)
Going concern
Material uncertainty disclosed

“We draw attention to the fact that the Company's ability to continue as a going concern is dependent upon the continued support of the company's financiers and prevailing economic conditions arising from ongoing global conflicts.”

Group structure

  1. PETROSTRAT LIMITED · parent
    1. USA PetroStrat Inc 100% · USA · Biostratigraphic consultancy
    2. PetroStrat Canada Ltd 100% · Canada · Biostratigraphic consultancy
    3. PetroStrat Senegal SUARL 100% · Senegal · Biostratigraphic consultancy
    4. PetroStrat Consultancy L.L.C S.P.C 100% · Abu Dhabi · Consultancy
    5. Biostrat JV Limited 51% · Trinidad · Geological service company
    6. Future Geoscience Ltd 49.9% · UK · Stratigraphy, Wellsite & reservoir studies

Significant events

Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers

People

5 active · 11 resigned

Name Role Appointed Born Nationality
RUTLEDGE, David Charles, Dr Secretary 2026-07-01 — —
CORNICK, Paul Andrew, Dr Director 2001-03-22 Jul 1967 British
FIELD, Kevin Lee Director 2021-04-01 Oct 1983 British
GREGORY, Francis John, Dr Director 2004-10-18 Mar 1964 British
RUTLEDGE, David Charles, Dr Director 2001-03-22 May 1968 British
Show 11 resigned officers
Name Role Appointed Resigned
CASTLE, Jonathan Paul Secretary 2008-06-09 2020-06-22
CORNICK, Michelle Louise Secretary 2001-03-22 2008-06-09
FIELD, Kevin Lee Secretary 2020-06-23 2022-03-21
JOHNSON, Paul James Secretary 2022-03-21 2026-06-30
BRITANNIA COMPANY FORMATIONS LIMITED Corporate Nominee Secretary 2001-03-22 2001-03-22
AILLUD, Gary Stefan, Dr Director 2021-04-01 2026-05-21
JOHNSON, Paul James Director 2022-01-19 2026-06-30
ROBERTS, David Grant Director 2022-04-01 2026-06-30
WARRINGTON, John Director 2017-04-27 2023-04-18
WELDON, Mark Francis Director 2005-02-10 2025-12-17
DEANSGATE COMPANY FORMATIONS LIMITED Corporate Nominee Director 2001-03-22 2001-03-22

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Dr David Charles Rutledge Individual Shares 25–50%, Voting 25–50% 2025-12-17 Active

Filing timeline

Last 20 of 113 total filings

Date Type Category Description
2026-09-30 AA accounts Accounts with accounts type group PDF
2026-07-03 AP03 officers Appoint person secretary company with name date PDF
2026-07-03 TM02 officers Termination secretary company with name termination date PDF
2026-07-03 TM01 officers Termination director company with name termination date PDF
2026-07-01 TM01 officers Termination director company with name termination date PDF
2026-06-03 SH06 capital Capital cancellation shares
2026-06-03 SH03 capital Capital return purchase own shares
2026-05-22 TM01 officers Termination director company with name termination date PDF
2026-04-30 CS01 confirmation-statement Confirmation statement with updates PDF
2026-04-30 PSC01 persons-with-significant-control Notification of a person with significant control PDF
2026-04-30 PSC09 persons-with-significant-control Withdrawal of a person with significant control statement PDF
2025-12-30 TM01 officers Termination director company with name termination date PDF
2025-12-23 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2025-09-30 AA accounts Accounts with accounts type group PDF
2025-05-02 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-12-20 AA accounts Accounts with accounts type group PDF
2024-12-12 AA01 accounts Change account reference date company current shortened PDF
2024-05-03 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-04-03 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-03-28 AA accounts Accounts with accounts type group PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
13

last 12 months

Capital events
2

last 24 months

Officers appointed
1

last 12 months

Officers resigned
5

last 12 months

Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.

Official Companies House page