Olswang is facing a multimillion-pound claim relating to advice it gave on the £460m acquisition of fitness club chain Esporta from private equity firm Duke Street Capital announced in 2006.

The case, which has been assigned to the Queen’s Bench Division of the Commercial Court, sees Olswang accused of negligence and breach of its duties of care under its client retainer in relation to advice it gave Esporta’s acquirers Ironzar III, a trust owned by property investor Simon Halabi.