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Next accounts due

2027-02-28 (in 9mo)

Last filed for 2025-05-31

Confirmation statement due

2026-10-14 (in 5mo)

Last made up 2025-09-30

Watchouts

None on the register

Cash

Latest balance sheet

Net assets

Equity attributable

Employees

Average over period

Profit before tax

-£724K

-925.6% vs 2024

Accounts

3-year trend · latest reflected 2025-05-31

Metric Trend 2023-05-312024-05-312025-05-31
Turnover £416,466£320,307
Operating profit £258,143-£441,134
Profit before tax £87,718-£724,209
Net profit £87,718-£637,209
Cash
Total assets less current liabilities
Net assets
Equity £2,707,399
Average employees
Wages
Directors' remuneration

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

Year-on-year

FY2024 → FY2025 · period ending 2025-05-31 vs 2024-05-31

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

Ratios

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

Ratio Trend 2023-05-312024-05-312025-05-31
Operating margin 62.0%-137.7%
Net margin 21.1%-198.9%
Interest cover 1.51x-1.56x

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.

Name history

Renamed 1 time since incorporation

  1. FILTRONIC WIRELESS LTD 2012-01-19 → present
  2. ISOTEK ELECTRONICS LIMITED 1978-03-30 → 2012-01-19

Audit & accounting basis

Accounting basis
FRS 101
Reporting scope
Standalone (parent only)
Auditor
Crowe U.K LLP
Audit opinion
Unqualified (clean)
Going concern
Affirmed

“The Board recognises the uncertain economic and political environment that the world faces and has reviewed the business outlook to reflect this uncertainty. Cash flow forecasts have been prepared to model various scenarios over a three-year period based on the Group's financial and trading position, principal risks and uncertainties and strategic plans. A downside scenario was modelled where programme curtailment and/or delays may adversely affect forward-looking demand to levels lower than those initially modelled in the base case scenario. The scenarios modelled above demonstrate the Group has adequate cash and borrowing capacity for the next twelve months. Therefore, the directors continue to adopt the going concern basis to prepare the financial statement”

Significant events

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

People

4 active · 25 resigned

Name Role Appointed Born Nationality
SHAW, Sarah Louise Secretary 2025-09-18
BLACK, Mark John Director 2017-11-01 Nov 1967 British
EDINGTON, Nathaniel Director 2024-05-13 Jul 1969 British
TYERMAN, Michael Director 2016-05-03 Sep 1978 British
Show 25 resigned officers
Name Role Appointed Resigned
BOGGS, Robert Alexander Secretary 2005-04-01 2009-10-29
CLEGG, Anthony Paul Secretary 1997-06-09
CONVEY, Peter Daniel Secretary 1997-06-30 2005-02-04
MOYNIHAN, Maura Eilis Secretary 2010-11-16 2022-06-01
SANSOM, Clifford John Secretary 2005-02-04 2005-04-01
SCHOFIELD, Christopher Ernest Secretary 2009-10-29 2010-11-16
TYERMAN, Michael Secretary 2022-06-01 2025-09-18
ARMSTRONG, Michael Anthony Patrick, Doctor Director 2010-11-16
BARTON, Trevor Mark, Doctor Director 1994-11-24 2010-11-16
BOGGS, Robert Alexander Director 1996-02-05 2010-11-16
BRENNAN, Michael Peter Director 2010-11-16 2014-04-15
COLQUHOUN, George Director 1997-06-30 1998-04-09
GIBBS, Richard William Director 2020-12-17 2024-05-13
LYNCH, David James, Dr Director 2015-07-15 2021-03-04
MARDIA, Hemant Kumar Director 2010-11-16 2012-09-21
MATYKIEWICZ, Stephen Anthony John, Dr Director 1994-06-20
MOBBS, Christopher Ian, Dr Director 2006-12-01 2010-11-16
NEEDLE, Alan Robert Director 2012-09-21 2015-03-13
PINCHES, Christopher Adrian Director 1993-07-19
RHODES, John David, Professor Director 1994-04-20 2010-11-16
SAMUEL, John William Young Strachan Director 1994-06-20
SANSOM, Clifford John Director 2000-08-01 2010-11-16
SMITH, Robert Stjohn Director 2014-06-18 2019-10-31
WILSON, David Alan, Doctor Director 1994-04-20 1997-06-30
WILSON, Stuart Granville Director 1994-06-20

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Isotek (Holdings) Limited Corporate entity Shares 75–100% 2016-04-06 Active

Filing timeline

Last 20 of 202 total filings

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

  • 2024-10-15 RESOLUTIONS Resolution
  • 2024-10-15 MA Memorandum articles
  • 2024-10-08 CC04 Statement of companys objects
Date Type Category Description
2026-03-04 AA accounts Accounts with accounts type full
2026-03-02 AD01 address Change registered office address company with date old address new address PDF
2025-10-07 CS01 confirmation-statement Confirmation statement with no updates PDF
2025-09-19 AP03 officers Appoint person secretary company with name date PDF
2025-09-19 TM02 officers Termination secretary company with name termination date PDF
2025-06-02 AA accounts Accounts with accounts type full
2024-10-24 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF
2024-10-15 RESOLUTIONS resolution Resolution
2024-10-15 MA incorporation Memorandum articles
2024-10-09 MR04 mortgage Mortgage satisfy charge full PDF
2024-10-09 MR04 mortgage Mortgage satisfy charge full PDF
2024-10-08 CC04 change-of-constitution Statement of companys objects
2024-09-30 CS01 confirmation-statement Confirmation statement with no updates PDF
2024-05-13 AP01 officers Appoint person director company with name date PDF
2024-05-13 TM01 officers Termination director company with name termination date PDF
2023-10-18 CS01 confirmation-statement Confirmation statement with no updates PDF
2023-09-26 AA accounts Accounts with accounts type full
2022-11-03 CS01 confirmation-statement Confirmation statement with no updates PDF
2022-11-03 AA accounts Accounts with accounts type full
2022-06-08 CH01 officers Change person director company with change date PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
6

last 12 months

Capital events
0

last 24 months

Officers appointed
1

last 12 months

Officers resigned
1

last 12 months

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

Official Companies House page