Tulkinghorn would advise US law firm Baker Botts to cordon off an area in its London outfit.

The area in question is the former office of corporate finance partner Andrei Yakovlev, who quit after just two months at the Texan firm for Norton Rose. Before Yakovlev had his short stint in that room, partner Jo Tirado, now also of Norton Rose, was camped there.

Rumours are emerging that there’s a secret passageway behind the filing cabinet that leads to Norton Rose.