Perhaps the question should not be: why does Allen & Overy keep losing partners to US firms but instead, why are Wall Street’s finest so poor at attracting them in the first place?

On the one hand, losing Andrew Brodie to Milbank Tweed Hadley & McCloy within days of rising acquisition finance star Euan Gorrie’s decision to succumb to the eager embrace of Simpson Thacher & Bartlett does suggest something of a pattern emerging at One New Change. With Marke Raines leaving for Shearman & Sterling in 2000 and Alex Cohen for Latham & Watkins last year, that makes four finance partners in two years.