UK bank Barclays said its new chairman will be banking and insurance veteran John McFarlane. 

He will be tasked with overseeing the British bank's efforts to improve culture, standards and performance. 

Mr McFarlane will step down as chairman of British insurer Aviva and take the Barclays hotseat after its 2015 annual shareholder meeting, usually held in April. 

The bank has been searching for a strong replacement for David Walker, who with chief executive Antony Jenkins has attempted to improve culture after a series of scandals raised concern about lax standards across the bank.

McFarlane was chief executive of Australia and New Zealand Banking Group for ten years until 2007 and has been Aviva's chairman since July 2012. 

He is also chairman of transport firm FirstGroup and will step down from both those firms. 

McFarlane joined ANZ from Standard Chartered, where he was an executive director from 1993 to 1997. He worked for Citigroup and its predecessor firms for 18 years until 1993. 

He was also a non-executive director at Royal Bank of Scotland from 2008 until 2012.