Allen & Overy has strongly denied allegations of negligence brought by the owners of London's former Olympic stadium over its work on a lease agreement involving Premier League football club West Ham United.

In October, the London Legacy Development Corporation (LLDC) and E20 Stadium (E20) launched a professional negligence and breach of contract claim against the elite U.K. law firm regarding advice it gave in 2013 when the premises became the home of West Ham United.