Xavier Rolet has had 100 days to stamp his mark on the London Stock Exchange; we look at how he has fared in tackling the exchange’s main challenges, as outlined by Financial News in May.

Delivering Baikal: 10/10 Rolet sees the LSE's dark pool Baikal as strategic in its battle with rivals and any failure to deliver the system before the end of June deadline would have left the exchange red-faced. The LSE, which had to delay the project once, cut it fine but succeeded in launching the system on time.