The second major challenge in developing useful LEIs is achieving international consensus.

FORBES: Legal Entity Identifier (LEI) ID Code for Banks and Subs Delayed Until 2012

It is Alan's second major challenge in the past few years.

BBC: Alan Rankin on his yacht Trade Winds

In the second part of the debate, John Swinney told the chamber the budget settlement had been a "major challenge" so far due to a "tight financial settlement" from Westminster.

BBC: Finance Committee Budget debate 1