When people think of transatlantic mergers, they normally think of UK-US unions. And yet the merger between London corporate boutique Stringer Saul and top four Canadian firm Fasken Martineau DuMoulin is one of those rare deals that seem to make perfect sense, on paper at least.

As the two firms explain in their unusually informative press release, the rationale for the deal lies with Stringer Saul’s healthy Alternative Investment Market (AIM) practice and the attractiveness of AIM to Canadian companies, especially in the mining sector.