A London law firm has claimed they are still owed more than $200,000 by the Michael Jackson estate for work they carried out for Jackson prior to his death.

The Hollywood Reporter reports that Atkins Thomson Solicitors is suing prominent entertainment attorney John Branca and music executive John McClain, executors of Jackson's estate, for breach of contract in a state claim filed Monday in California.

"Defendants have failed to honor Jackson's obligations under, and has materially breached, the agreement with Atkins, and any implied covenants therein, by failing to make the payments as required," writes Atkins' attorney Stanton L. Stein in the complaint.

Atkins claims it provided legal and other services to Jackson from 2007 through 2009, and in the months leading up to his death Jackson's business in the U.K. ramped up and the firm "provided hundreds of hours of services to Jackson across nearly a dozen matters."