Derwent looks like one manufacturing group. Two companies inside it are now in administration.

In February 2023 the Australian Business Growth Fund put $15 million into Derwent Industries, an Australian manufacturer supplying castings, clamps, couplings and flow-control equipment under names including Keech Castings, Kawandah Clamps and Derwent Foundry. Over the rest of that year, Derwent added Mackay, a rubber manufacturer, and AVFI, a valve and filter supplier.

To a customer or supplier, it increasingly looked like one expanding industrial group.

As of today, two of those three companies are in voluntary administration.

If your ledger says Keech Castings, the company that owes you money may be Derwent Industries Pty Ltd.

If it says AVFI, it is not.

And if it says Mackay Australia, that is another company again.

Derwent Industries Pty Ltd, ACN 096 997 152, and AVFI Pty Ltd, ACN 159 299 242, both entered voluntary administration on 9 September. Robert Smith and Matthew Hutton of McGrathNicol were appointed to both. ASIC published the notice on 14 September.

It is one notice. A single combined notice of appointment and first meeting of creditors names both companies. Proofs and proxies are due 5:00pm on 18 September, and the first meeting is at 11:00am on 21 September, held virtually.

Mackay Australia Pty Ltd is not named in it.

Yet the group's own website presents Derwent, AVFI, Keech and Mackay as one operating network, and gives Derwent's head office and Mackay Australia the same Dandenong South address.

One commercial group. Multiple legal companies. Different insolvency positions.

There is a smaller version of the same problem inside Derwent itself. The company was formerly named Derwent Pipelines Pty Ltd, and Derwent Pipelines is still one of its eight current business names. A search on that name reaches the right company by accident rather than by design.

AVFI carries the same shape. It was formerly AVFI Imports Pty Ltd, and AVFI Imports is one of its three current business names.

When AVFI announced it was joining Derwent in 2023, it told customers and suppliers the acquisition strengthened its market and financial position and would provide greater efficiencies, supply certainty and financial security. It said its ABN and bank details would not change, and that it did not anticipate disruption to customer ordering, supplier procurement or payment arrangements.

The unchanged ABN is the part that matters now.

AVFI joined the group commercially. It did not stop being AVFI Pty Ltd legally. Three years later, both companies entered administration on the same notice.

That does not tell us why either failed. It shows why a credit file should preserve the company underneath a business even after the business joins a larger group.

Derwent Industries has been on the register since 2001, under its present name since November 2005. The $15 million the Australian Business Growth Fund announced in February 2023 was intended to fund robotics and automation, expanded manufacturing capacity and regional employment.

Mackay was acquired in March 2023. AVFI joined later the same year.

Then, at the start of this year, Derwent Industries took a new seven-year lease on its Wodonga fabrication site at 36 Moloney Drive, running from 1 January 2026 to 31 December 2032 at a disclosed starting rent of $330,000 net a year plus GST, with Derwent paying outgoings. That material is the selling agent's, and it does not establish who owned or sold the property. The sale price should not be read as money Derwent received.

Administration followed a little over eight months after that lease began.

In April, Tasmania's Environment Protection Authority began assessing a proposal to lift production at Derwent's Derwent Park foundry from 1,000 to 1,500 tonnes a year, a 50 per cent increase, with no change to footprint, staff or operating hours. Five months later the company was in administration.

None of that explains the administrations, and none of it is evidence that the investment, the acquisitions, the lease or the expansion caused them. What it establishes is narrower: the public-facing record was still one of investment and planned growth close to the appointment.

Mackay is the clearest demonstration of why the boundary matters.

Derwent markets Mackay as part of its manufacturing capability and places it inside the same operating network on its own site. Commonwealth procurement records follow the legal company instead. Mackay Australia Pty Ltd appears under its own ABN in multiple contract notices, almost all with the Department of Defence. Victorian Government defence material likewise identifies Mackay Australia Pty Ltd as the supplier while noting its acquisition.

None of that establishes that Defence, or any other buyer, has present exposure to an insolvency. A past contract notice is not an unpaid invoice.

It establishes something narrower and more useful: even where the market sees one integrated group, the counterparty on the contract can be the individual company underneath it.

Mackay's contracts belong to Mackay Australia Pty Ltd. Mackay Australia Pty Ltd is not named in these appointments.

It establishes voluntary administration for two companies, their administrators, a proof and proxy deadline of 5:00pm on 18 September, and a first meeting of creditors at 11:00am on 21 September, to be held virtually.

It does not establish total creditor claims, the secured-creditor position, intercompany balances, employee exposure, what caused the appointments, whether either company continues to trade, whether a sale process will run, or how economically dependent Mackay Australia is on either company. No administrator report has been obtained.

The brand tells you who you think you are dealing with. The legal entity tells you where the debt sits.

ASIC published 121 notices covering 119 entities on 14 September:

A winding-up application asks a court for an order; it does not mean a company has been wound up. A members' voluntary liquidation is ordinarily solvent. 80 deadlines fall out of the day: 31 proofs of debt, 24 proof and proxy, 22 hearings and 3 proposal periods.

Several other entries carry customer-facing names that differ from the company on the notice. Jopet Holdings Pty Ltd is associated with Formetta Cabinets, Wood Marble & White and Border Joinery. Quick Flooring Solutions Pty Ltd holds National Floors and Carpets. Hanith RV Solutions Pty Ltd holds Coastal RV Repairs, Coastal RV (QLD) and Hanith RV. Uptick Marketing Pty Ltd holds LendingGuide.com.au. All four entered creditors' voluntary liquidation.

Supavest Pty Ltd entered court liquidation holding nine registered business names, including S.A.F.E. Property, Supavest Capital and Supavest Property. We cover the Supavest liquidation and what it means for its property investors separately.

These are applications published on 14 September. An application asks a court for an order. It is not a finding of insolvency, and it can be paid out, settled, adjourned or dismissed.

The Deputy Commissioner of Taxation brought 8 of the 22. Skyecap brought three, and DP Cranes, trading as Titan Mobile Cranes, brought two.

The remaining 18 are in the full 14 September register, with the applicant, court and hearing for each.

ASIC published notices dated 14 September 2026 provide the appointments, the administrators, the first meeting date, the applications and the deadlines. Company registrations, former names and registered business names are from the ASIC company register and the Australian Business Register. The group's own published material provides its corporate descriptions and the AVFI acquisition statement. The lease terms are from the selling agent's marketing material, which is not a title record. The foundry assessment is the Tasmanian environmental regulator's own record, and the procurement records are the Commonwealth's.

The counts above are of the notices ASIC published on 14 September, captured complete: 121 of 121 detail pages. They describe what was published that day, not what occurred on it.