By Maria Ward-Brennan The founder of Greensill Capital, Lex Greensill, has filed a lawsuit against the Department for Business and Trade over the alleged “misuse of private information”. The claim was filed last Thursday and he has appointed specialist law firm Ellerman, which has David Huw Williams KC and Ivan Pearce as joint directors, to represent him, according to the High Court claims system. No further details about the claim were made available. Greensill Capital was a financial services company focused on the provision of supply chain financing and related financial services in the UK …