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Next accounts due

2026-06-30 (in 1mo)

Last filed for 2024-09-30

Confirmation statement due

2027-03-16 (in 10mo)

Last made up 2026-03-02

Watchouts

None on the register

Cash

£32M

-4% vs 2023

Net assets

£77M

+4% vs 2023

Employees

249

+2.5% vs 2023

Profit before tax

£14M

+15.9% vs 2023

Name history

Renamed 1 time since incorporation

  1. MAST GROUP LIMITED 1994-11-14 → present
  2. MAST LABORATORIES LIMITED 1959-07-10 → 1994-11-14

Accounts

2-year trend · latest reflected 2024-09-30

Metric Trend 2023-09-302024-09-30
Turnover £53,063,038£56,415,595
Operating profit £11,670,494£12,568,197
Profit before tax £12,368,313£14,334,915
Net profit £9,549,545£10,608,607
Cash £33,238,202£31,910,048
Total assets less current liabilities £75,467,486£78,443,027
Net assets £74,290,814£77,292,586
Equity £74,290,814£77,292,586
Average employees 243249
Wages £9,564,500£10,287,131

Values shown as filed in the company's annual accounts. indicates the figure wasn't present under that line item in that period. About these numbers

Ratios

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

Ratio Trend 2023-09-302024-09-30
Operating margin 22.0%22.3%
Net margin 18.0%18.8%
Return on capital employed 15.5%16.0%
Gearing (liabilities / total assets) 12.1%18.9%
Current ratio 7.63x4.60x
Interest cover 188.04x125.13x

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
Grant Thornton UK LLP
Audit opinion
Unqualified (clean)
Going concern
Affirmed

“After reviewing the forecasts and projections, the directors have a reasonable expectation that the company and group have adequate resources to continue in operational existence for the foreseeable future. Thus they continue to adopt the going concern basis of accounting in preparing the financial statements.”

Group structure

  1. MAST GROUP LIMITED · parent
    1. Mast Diagnostics Limited 100% · Dormant
    2. Mast International Limited 100% · Dormant
    3. Mast Diagnostic SARL 100% · France · Medical diagnostics
    4. Mast Diagnostica GmbH 77.5% · Germany · Medical Diagnostics
    5. Mercury Investments (UK) Limited 100% · Dormant
    6. Samuel Skelly Limited 100% · Printing

Significant events

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

People

1 active · 3 resigned

Name Role Appointed Born Nationality
OLIVER, Christopher John Director Feb 1958 British
Show 3 resigned officers
Name Role Appointed Resigned
BATCHELOR, Carol Ann Secretary 2010-05-21
OLIVER, Albert John Director 2012-11-03
OLIVER, Margaret Director 2023-02-25

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Mrs Laura Jane Paterson Individual ownership-of-shares-75-to-100-percent-as-trust, voting-rights-75-to-100-percent-as-trust, right-to-appoint-and-remove-directors-as-trust, significant-influence-or-control-as-trust 2026-04-04 Active
Margaret Oliver Individual Shares 25–50%, Voting 25–50%, Appoints directors 2017-03-05 Ceased 2023-02-25
Christopher John Oliver Individual ownership-of-shares-75-to-100-percent-as-trust, voting-rights-75-to-100-percent-as-trust, right-to-appoint-and-remove-directors-as-trust, significant-influence-or-control-as-trust 2017-03-05 Active

Filing timeline

Last 20 of 123 total filings

Material constitutional events — rename, articles re-file, resolution

  • 2026-05-02 RESOLUTIONS Resolution
Date Type Category Description
2026-05-05 PSC04 persons-with-significant-control Change to a person with significant control PDF
2026-05-05 PSC01 persons-with-significant-control Notification of a person with significant control PDF
2026-05-02 RESOLUTIONS resolution Resolution
2026-05-02 SH08 capital Capital name of class of shares
2026-03-03 CS01 confirmation-statement Confirmation statement with no updates PDF
2025-07-07 AA accounts Accounts with accounts type group
2025-03-06 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-10-18 AA accounts Accounts with accounts type group
2024-04-26 CS01 confirmation-statement Confirmation statement with no updates PDF
2023-08-07 AA accounts Accounts with accounts type group
2023-05-05 PSC07 persons-with-significant-control Cessation of a person with significant control PDF
2023-05-05 TM01 officers Termination director company with name termination date PDF
2023-03-15 CS01 confirmation-statement Confirmation statement with no updates PDF
2022-08-03 AA accounts Accounts with accounts type group
2022-03-02 CS01 confirmation-statement Confirmation statement with no updates PDF
2021-08-07 AA accounts Accounts with accounts type group
2021-03-02 CS01 confirmation-statement Confirmation statement with no updates PDF
2020-07-08 AA accounts Accounts with accounts type group
2020-03-16 CS01 confirmation-statement Confirmation statement with no updates PDF
2019-11-13 MR04 mortgage Mortgage satisfy charge full PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
6

last 12 months

Capital events
1

last 24 months

Officers appointed
0

last 12 months

Officers resigned
0

last 12 months

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

Year-on-year

FY2023 → FY2024 · period ending 2024-09-30 vs 2023-09-30

Each % is (latest − prior) ÷ |prior| for the line item as filed. The comparison is only shown when the latest and prior accounts cover broadly equal-length periods — short or long stubs (typical around incorporation or a year-end change) are suppressed rather than misrepresented. Lines a company doesn't report are omitted. About these numbers

Official Companies House page