Dewey & LeBoeuf's London arm has seen a further four partner departures, including restructuring duo Mark Fennessy and Hazel Miller who are set to join their New York counterparts at US rival Proskauer Rose.

Fennessy and Miller's forthcoming departures come just days after New York bankruptcy chief Martin Bienenstock announced his departure for Proskauer alongside a six-partner team.

European restructuring chief Fennessy has been leading the UK LLP's insolvency proceedings as one of the last remaining members of a five-partner London crisis committee set up earlier this month to co-ordinate the wind-down of the business.

Fennessy and Miller joined Dewey last September from Orrick Herrington & Sutcliffe alongside a team comprising one of counsel, one senior associate, two associates and a paralegal.

Meanwhile it has emerged that corporate partner Dan Coppel has left to join the City arm of rival US firm Jones Day.

Coppel, who left the firm earlier this month (11 May), focuses on M&A and private equity, predominantly in the energy and natural resources space.

Separately, employment partner Sarah Linton is to join the recently-launched London office of US firm Locke Lord.

A partner in in compensation, benefits and employment department at Dewey, Linton focuses on employment contracts, termination agreements, disputes, non-compete and confidentiality covenants, as well as trade union and employee representation issues.

London partners including Deborah Ruff and Ben Donovan have also left the firm, leaving the failing firm's City arm with four partners.

Other notable London departures in recent weeks have included managing partner Peter Sharp and Bruce Johnston, who have both taken their respective teams – litigation and finance – across to US firm Morgan Lewis & Bockius. Meanwhile, highly-regarded oil and gas partners John LaMaster and Marc Hammerson have joined the London office of Akin Gump Strauss Hauer & Feld.

Elsewhere, London corporate finance duo Frank Adams and Federico Salinas have joined Greenberg Traurig alongside Dewey's 50-lawyer Warsaw office.

The London base is expected to close in the coming weeks, with CMS Cameron McKenna restructuring partner Rita Lowe instructed to advise on the office's wind-down.