WORLD NEWS TOMORROW-   Adair Turner, chairman of the Financial Services Authority (FSA), wrote to incoming Barclays Chairman David Walker on Thursday to stress that there can be no let up in efforts to reform the bank, a person familiar with the matter said.

Walker joined the Barclays board last week and will become chairman in November, while Antony Jenkins was last week promoted to chief executive after previous CEO Bob Diamond quit in July after the bank was fined for manipulating Libor interest rates.

The FSA meets senior bank executives before they are appointed to discuss their priorities and regulatory issues, and follows up with a letter.Barclays and the FSA declined to comment on the letter saying it was private.Last year a letter from Turner to Barclays showed the regulator was concerned about an aggressive culture at the bank under Diamond, and the FSA said in the wake of the Libor scandal that culture must change.