The practice, known as phoenixism, allows directors to liquidate a company and then resume trading through a new entity free of old debts. HM Revenue and Customs estimates it costs taxpayers hundreds of millions of pounds a year.
The research used AI agents to read official filings for administrations begun in England and Wales in 2019, a period the company said was long enough for creditor returns and buyer failures to show. The results were checked by other computer models and verified by humans.
Connected-party buyers were far more likely to be allowed to defer payments in the transaction: 65 per cent of connected-party deals used deferred payments, compared with 28 per cent for unconnected buyers. Unsecured creditors received a return in only 23 per cent of connected-party pre-packs with deferred payments, at an average of 1.58 pence in the pound. For unconnected buyers, 36 per cent of administrations resulted in payments to these creditors, at 7.86 pence in the pound.
Ben Sims, managing director of Turnstone Intelligence, said: 'I was surprised how big the gap remains. These results support what many in the industry have long suspected and will feed the continuing debate as to whether saving these businesses is worth the impact on taxpayers and creditors.' He added: 'Of course, the biggest loser is often the taxpayer.'
The findings echo earlier research. A 2014 government-commissioned review and an EU-funded study from 2018 both identified poorer outcomes in connected-party pre-pack administrations. Riz Mokal, honorary law professor at University College London and co-author of the EU study, described the new data as 'striking' and consistent with earlier work. He said the deals allow non-viable 'zombie' businesses to shed liabilities and harm competitors that pay their way.
Proponents of phoenixism argue it can deliver better returns for creditors, because experienced directors may be better placed to salvage a failed company than a newcomer.
R3, the insolvency industry body, said the research only covered cases that predated 2021 rule changes that increased scrutiny of connected-party pre-pack sales and introduced additional safeguards. Caroline Sumner, chief executive of R3, said: 'A connected-party pre-pack administration sale is a legitimate and regulated insolvency process overseen by licensed insolvency practitioners and subject to extensive professional and statutory requirements. The duties of an administrator in a pre-pack administration sale are to achieve the best outcome for creditors of the company overall.'